🖤 NGRAVE ZERO review: security, features and score
75/100SCORE · BTrustedHardware, keys on device
Grade B, very good
Very large holdings where certification and air gapping matter more than price.
The facts
- DEVELOPER
- NGRAVE, Belgium
- LAUNCHED
- 2021
- TYPE
- Hardware, air gapped
- CUSTODY MODEL
- Hardware, keys on device
- KEY MODEL
- Seed generated from device sensors with no external entropy, on a certified chip
- CHAINS
- Bitcoin, Ethereum and 4,000 plus assets
- PLATFORMS
- QR signing with its own app, plus WalletConnect
- OPEN SOURCE
- Partial
- AUDITS
- EAL7 certified, the highest certification of any consumer wallet
- HARDWARE SUPPORT
- Is the hardware
- SWAP COST
- Third party providers.
What it can do
How the score breaks down
Each dimension is explained on the methodology page.
Where it is strong and where it is not
✓ Strengths
- EAL7 certification, the highest of any consumer hardware wallet
- Fully air gapped over QR codes
- Seed generated on device with no external entropy source
- Steel backup plate included
✗ Weaknesses
- Expensive
- Firmware not fully open source
- Bulkier than the alternatives
Incident history
No security breach or significant incident on record.
Certification measures the chip and process, not your habits. It does not protect you from approving a malicious transaction.
Reputation and reviews
A reputation score out of 100, kept separate from the feature score above. It reflects what users actually report over time rather than a star rating scraped on one day.
REPUTATION
76/100
The highest security certification available in a consumer device, and priced accordingly. Criticised for cost and for firmware that is not fully open.
Check current reviews yourself
Star ratings change constantly, so we link to the sources rather than printing a number that is out of date the day after it is written.
If something goes wrong
COMMON FIXES
Transaction stuck pendingYour transaction has sat as Pending for minutes or hours and nothing is moving.Transaction failed but the gas was still takenThe transaction reverted, you got nothing, and the fee left your wallet anyway.Token is not showing in my walletThe block explorer shows the tokens arrived, but the wallet shows nothing.I sent tokens to the wrong networkYou withdrew to your address but picked the wrong chain, and the balance is not where you expected.
RISK WARNING
Crypto assets are highly volatile and largely unregulated. You can lose everything you put in.
Nothing on this page is financial, investment or tax advice, and nothing here is a recommendation
to buy or sell any asset. Do your own research and never commit money you cannot afford to lose.