NGRAVE Zero Review: The Highest Security Air-Gapped Hardware Wallet Money Can Buy

Name: NGRAVE Zero Review: The Highest Security Air-Gapped Hardware Wallet Money Can Buy
Brand: NGRAVE
Price: 269 USD
Availability: InStock
Rating: 4.5 (1 reviews)

May 18, 2026 Hardware Wallet Reviews, Brand Reviews

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Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

The NGRAVE ZERO is the most sophisticated consumer hardware wallet available in 2026. Its truly air-gapped design — achieved through an elegant QR-code workflow — eliminates every electronic attack vector that USB and Bluetooth devices face. Combined with a large color touchscreen, EAL5+ secure element, and encrypted Graphene backup system, the ZERO represents the state of the art in cold storage security.

The $269 price and limited coin support are genuine trade-offs. For users who need broad altcoin support, the ZERO is not the right choice — Ledger or BitBox02 will serve better. But for the Bitcoin holder who wants the most paranoid security available in a consumer device, the ZERO delivers on its promise of mathematical isolation from all electronic threats.

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.

High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.

High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.

Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.

High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.

Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.

Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.

No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.

No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.

QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.

No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.

Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.

Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.

Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.

Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.

No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.

Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.

Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.

EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.

Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.

Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)

Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.

Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.

Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.

Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.

Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.

Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Supply chain compromise (mitigated by NGRAVE’s verification process)

The ZERO’s secure element is EAL5+ certified — the same certification level used in banking smartcards and government security systems. NGRAVE publishes source code on GitHub (though the secure element firmware itself is proprietary), and the company has engaged third-party security auditors including Trail of Bits.

Supported Cryptocurrencies

The ZERO supports approximately 15 major cryptocurrencies — a deliberately curated list that includes Bitcoin, Ethereum, Litecoin, Ripple, Stellar, Algorand, Polkadot, Chainlink, and several others. This is significantly fewer than Ledger (5,500+) or even BitBox02 (~50), reflecting NGRAVE’s security-first philosophy: less supported coins means less firmware complexity and smaller attack surface.

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Side-channel attacks on the secure element (very high complexity)

Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Side-channel attacks on the secure element (very high complexity)

Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Physical theft of the device

Side-channel attacks on the secure element (very high complexity)

Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet

The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet

The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN

The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet

The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The app broadcasts the signed transaction to the blockchain

This QR-code workflow means the ZERO and your phone never have any electronic connection — they communicate only through light (cameras and screens). There is no possible way for malware on your phone to reach the ZERO because there is no electronic bridge between them. The ZERO is, in the most complete sense of the term, truly air-gapped.

NGRAVE Graphene: The Backup System

NGRAVE developed a unique backup system called Graphene that splits your seed phrase into two encrypted parts. Unlike standard BIP39 seed phrases that are written as plain words on paper, Graphene encrypts each share with a user-defined PIN before encoding it as a QR code.

When you set up your ZERO, you create two “Graphene shares” — each is a QR code that encodes an encrypted fragment of your master seed. You photograph each share using the Graphene app (which runs fully offline on your phone, never uploading anything). To recover your wallet, you need both shares plus the PIN you set during backup.

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You scan this QR code using the ZERO’s camera

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You scan this QR code using the ZERO’s camera

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The app generates a QR code that encodes the transaction details

You scan this QR code using the ZERO’s camera

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The app generates a QR code that encodes the transaction details

You scan this QR code using the ZERO’s camera

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You create a transaction in the NGRAVE Graphene app on your phone

The app generates a QR code that encodes the transaction details

You scan this QR code using the ZERO’s camera

The ZERO displays the transaction details on its screen for your verification

You confirm the transaction on the ZERO’s touchscreen

The ZERO generates a QR code containing the signed transaction

You scan this QR code back into the NGRAVE Graphene app

The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You create a transaction in the NGRAVE Graphene app on your phone
The app generates a QR code that encodes the transaction details
You scan this QR code using the ZERO’s camera
The ZERO displays the transaction details on its screen for your verification
You confirm the transaction on the ZERO’s touchscreen
The ZERO generates a QR code containing the signed transaction
You scan this QR code back into the NGRAVE Graphene app
The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

You create a transaction in the NGRAVE Graphene app on your phone
The app generates a QR code that encodes the transaction details
You scan this QR code using the ZERO’s camera
The ZERO displays the transaction details on its screen for your verification
You confirm the transaction on the ZERO’s touchscreen
The ZERO generates a QR code containing the signed transaction
You scan this QR code back into the NGRAVE Graphene app
The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

The NGRAVE ZERO is a Belgian-made air-gapped hardware wallet that represents the pinnacle of hardware security for cryptocurrency custody. Unlike most hardware wallets that connect via USB or Bluetooth, the ZERO operates entirely without any wireless connectivity — no WiFi, no Bluetooth, no NFC. Every interaction between the ZERO and your computer happens through a physical QR code displayed on the device and scanned by your phone’s camera — a genuinely air-gapped workflow that eliminates entire categories of attack vectors.

The ZERO was designed from the ground up with security as the primary constraint — not a feature added after the industrial design. The result is a device that looks unusual (it has no USB port, no buttons on the front, and a vertical orientation with a large color touchscreen) precisely because it was designed by people who prioritized security over convention.

What Is the NGRAVE ZERO?

The NGRAVE ZERO is a cold storage device featuring a 4″ color touchscreen, no wireless radios of any kind, and a unique QR-code-based communication protocol. It generates and stores private keys in an EAL5+ certified secure element, and the firmware is open source (available on NGRAVE’s GitHub). The device has no battery — it’s powered exclusively via USB-C when in use, and when disconnected, it’s completely dark and electrically isolated.

The ZERO ships with NGRAVE’s companion app, NGRAVE Graphene, which runs on your phone and manages the transaction signing workflow. The app never connects to the internet — it communicates with the ZERO only via QR codes displayed on the ZERO’s screen and scanned by your phone’s camera. This creates a mathematically provable air-gap between your private keys and any network-connected device.

Technical Specifications

Specification	Detail
Price	~$269
Display	4″ color touchscreen (480×320)
Connectivity	None (air-gapped by design)
Communication	QR codes (display) + camera (scan)
Secure Element	EAL5+ certified (specific chip not disclosed)
Battery	None — USB-C powered when in use
Backup	NGRAVE Graphene (2-part encrypted split)
Weight	~90g
Dimensions	97 x 60 x 8mm
Shamir Support	Yes — SLIP39 compatible
Coins Supported	~15 major coins (BTC, ETH, LTC, XRP, etc.)
Material	Stainless steel + high-grade plastic

The Air-Gap Philosophy

Traditional hardware wallets connect via USB to a computer or Bluetooth to a phone. Even when these connections are encrypted, they represent potential attack surfaces — malware on your computer could attempt to exfiltrate private keys during USB communication, or exploit Bluetooth protocol vulnerabilities. The ZERO eliminates this entire class of attacks by having no wireless connectivity of any kind.

When you want to sign a transaction on the ZERO, the workflow is:

You create a transaction in the NGRAVE Graphene app on your phone
The app generates a QR code that encodes the transaction details
You scan this QR code using the ZERO’s camera
The ZERO displays the transaction details on its screen for your verification
You confirm the transaction on the ZERO’s touchscreen
The ZERO generates a QR code containing the signed transaction
You scan this QR code back into the NGRAVE Graphene app
The app broadcasts the signed transaction to the blockchain

NGRAVE Graphene: The Backup System

This approach provides several security advantages:

Even if someone obtains one Graphene share, they cannot access your funds without the second share AND the PIN
The shares are encrypted — not raw seed words — so physical theft of one share doesn’t compromise the wallet
The QR-based share storage is more durable and legible than paper seed words

Security Analysis

The ZERO’s air-gapped design eliminates USB/Bluetooth attack vectors entirely. Since the device has no radio and no electronic data connection, the only possible attack vectors are:

Physical theft of the device
Side-channel attacks on the secure element (very high complexity)
Supply chain compromise (mitigated by NGRAVE’s verification process)

Supported Cryptocurrencies

Supported	Not Supported
Bitcoin (BTC)	Solana (SOL)
Ethereum (ETH)	Cardano (ADA)
Litecoin (LTC)	Sega (SGD)
XRP (Ripple)	Most ERC-20 tokens (via ETH)
Stellar (XLM)	NFT minting/management
Algorand (ALGO)	DeFi protocols
Polkadot (DOT)	Staking via device

Setup Process

Step 1: Download NGRAVE Graphene on your offline phone (NGRAVE recommends a dedicated spare phone)
Step 2: Connect the ZERO to power via USB-C. Follow the on-screen setup wizard.
Step 3: The ZERO generates a master seed on its secure element — this never leaves the device.
Step 4: Create your Graphene backup: photograph the first share QR code with NGRAVE Graphene, then the second share QR code.
Step 5: Set your PIN — used to decrypt the Graphene shares during recovery.
Step 6: Pair with NGRAVE Graphene by scanning the ZERO’s pairing QR code.
Step 7: Install the coin apps you need from the NGRAVE Graphene catalog.

Comparison with Competitors

Feature	NGRAVE ZERO	Coldcard Mk4	Ledger Flex
Price	$269	$159	$189
Air-gapped	Yes — QR codes	Yes — SD card	No
Wireless	None	None	Bluetooth
Screen	4″ color touchscreen	128×64 OLED	2.8″ color touchscreen
Secure element	EAL5+ (undisclosed)	ATECC608A	ST33J
Coins supported	~15	Bitcoin only	5,500+
Backup system	Graphene (encrypted split)	BIP39 (standard)	BIP39 / Shamir
Open source	Partial (app + firmware)	Full (fw + hw)	Partial

Key Advantages

True air-gap: QR-code communication means the ZERO is never electronically connected to any device — the most complete isolation available.
No wireless attack surface: No WiFi, Bluetooth, NFC, or USB — malware cannot reach the ZERO through any electronic channel.
Large touchscreen: 4″ display is the largest of any hardware wallet, making address and amount verification easy.
Graphene encrypted backup: Two-part encrypted backup system provides stronger protection than plain-text seed phrases.
EAL5+ secure element: Government-grade security certification.

Key Limitations

Limited coin support: ~15 coins vs 5,500+ on Ledger — not suitable for users with diverse altcoin portfolios.
QR code workflow complexity: More steps than USB/Bluetooth — less convenient for frequent transactions.
No Bluetooth = no mobile: Must be physically near a computer with USB power — less portable than Ledger Flex with Bluetooth.
Higher price: $269 is the most expensive consumer hardware wallet — premium for the air-gap.
Proprietary secure element: The chip manufacturer is not disclosed, making independent verification harder.

Who Should Buy the NGRAVE ZERO?

Maximum security purists: Users who want the most complete air-gap available and are willing to pay for it.
Bitcoin-only holders: If you hold only Bitcoin and Ethereum, the ZERO’s limited coin support is not a constraint.
High-net-worth holders: The premium pricing reflects serious security engineering — appropriate for protecting significant wealth.
Privacy-focused users: No wireless connectivity means no radio frequency emissions that could be detected or tracked.
Users uncomfortable with USB/Bluetooth: If you genuinely fear USB/Bluetooth compromise, the ZERO eliminates those attack vectors entirely.

Final Verdict

Affiliate Disclosure: Purchases through our links may earn us a commission at no extra cost to you. Buy NGRAVE ZERO

📚 Looking for the complete picture?
This article is part of our Hardware Wallet Security Cluster — the most comprehensive security resource online. → Read the Full Security Guide → Most Secure Wallets Ranking

NGRAVE Zero Review: The Highest Security Air-Gapped Hardware Wallet Money Can Buy

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