Ledger
est. 2014
The best-selling hardware wallet family, with a secure element chip and the broadest asset support in the industry.
Hardware Wallets
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Hardware Wallets
Fact-checked 2026-08-14
NGRAVE ZERO
Established 2018
The vault-grade option: a fully offline device with the highest security certification in consumer crypto hardware.
The NGRAVE ZERO is an entirely offline signing device — no USB, Bluetooth, Wi-Fi or cellular radio at all — communicating only via QR codes with the NGRAVE app. It holds an EAL7 security certification (the highest level used in consumer crypto hardware) and ships with an engraved steel backup.
Quick facts
Founded
2018
Category
Hardware Wallets
Platforms
iOS, Android
Key facts
EAL7 certification, Fully offline
Pros
- The most extreme isolation available — zero connectivity
- EAL7 certified hardware security
- Premium build with steel 'Graphene' seed backup included
Cons
- Premium price tag (~US$400)
- Slower QR-based workflow
- No desktop app
Best for
Large holdings where cost is no object
Fees
Hardware ~US$398; no ongoing fees.
Security notes
The 'no connectivity at all' design removes an entire class of remote attacks. Keep the Graphene backup and the device in different physical locations.
air-gappedpremiumeAL7
Frequently asked questions
What is NGRAVE ZERO?
NGRAVE ZERO is The vault-grade option: a fully offline device with the highest security certification in consumer crypto hardware. The NGRAVE ZERO is an entirely offline signing device — no USB, Bluetooth, Wi-Fi or cellular radio at all — communicating only via QR codes with the NGRAVE app. It holds an EAL7 security certification (the highest level used in consumer crypto hardware) and ships with an engraved steel backup.
Is NGRAVE ZERO safe to use?
The 'no connectivity at all' design removes an entire class of remote attacks. Keep the Graphene backup and the device in different physical locations. As always, verify details on the official site before trusting funds to any service.
How much does NGRAVE ZERO cost?
Hardware ~US$398; no ongoing fees. Figures change — confirm current pricing on the official site before deciding.
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