When regulators want billions protected, they ask for one thing: keep more of it offline.
That standard works for your stack too. ❄️
3.7/ 5
Our score
Good
Price from
$398
Secure element
Yes
Connectivity
QR code (air-gapped)
Supported assets
15
Bitcoin-only
No
What is NGRAVE?
NGRAVE ZERO is a hardware wallet created by Belgian security firm NGRAVE, founded in 2018. It signs transactions through QR codes while remaining fully air-gapped without USB, Bluetooth or Wi-Fi. The device features EAL7 security certification, a 4-inch touchscreen and biometric authentication.
Products and company
NGRAVE manufactures ZERO alongside the GRAPHENE backup and the LIQUID mobile app. GRAPHENE is an encrypted, recoverable stainless-steel plate set that stores wallet keys across separate upper and lower sections. LIQUID manages crypto and NFTs without exposing keys, communicating with ZERO via QR codes. All products are manufactured in Belgium, where the company is based.
How ZERO works
The device generates and stores keys entirely offline. NGRAVE OS uses a custom security architecture with secure boot and hardware cryptography, and biometric checks protect access. ZERO can display a 256-bit key either as NGRAVE's hexadecimal Perfect Key or as a 24-word mnemonic. Because transactions transfer between LIQUID and ZERO exclusively through two-way QR scanning, the signing device never connects to a network.
Supported assets include Bitcoin, Bitcoin Cash, Ethereum, Dash, Zcash, Litecoin, BNB, XRP, Dogecoin, Tezos, MultiversX, Groestlcoin, Solana, Stellar, Polygon and Avalanche. The wallet also handles Ethereum ERC-20 tokens, MultiversX ESDT tokens and Ethereum NFTs. MetaMask and Rabby integrations permit connections to EVM-based chains through third-party interfaces.
Prices and availability
ZERO sells for $398. GRAPHENE costs $148 on its own, and the ZERO and GRAPHENE Combo Pack is available for $498. Orders ship from the NGRAVE Store, Amazon US and authorized resellers. NGRAVE offers free next-day shipping on orders over $300, supports credit card, crypto and Bancontact payments, and accepts returns within 30 days.
Track record and risks
NGRAVE released firmware 1.8. The release introduced the open Universal QR Protocol, faster optical scanning, Polygon token support and updated fingerprint handling. LIQUID entered maintenance on October 18, 2026, while the firm secured its backend, temporarily preventing portfolio syncing. This maintenance followed an alert on October 17, 2026, concerning fake LIQUID notifications that attempted to phish recovery phrases and Perfect Keys, prompting NGRAVE to advise anyone who submitted credentials to transfer their funds immediately to a fresh address.
ZERO's air-gapped architecture isolates keys from network vulnerabilities, though the setup requires manual QR code exchanges and relies on LIQUID for portfolio management. Adding the GRAPHENE steel backup also requires an additional purchase.
Founders
Xavier HendrickxCTO, Co-founder
Ruben MerreCEO, Co-founder
Edouard VanhamCOO, Co-founder
Best for:Long-term offline self-custodyAir-gapped wallet buyersStainless-steel backup usersEVM users with Rabby or MetaMask
Pros and cons
Pros
- Fully air-gapped signing through QR codes
- EAL7-certified security architecture
- 4-inch touchscreen with biometric access
- GRAPHENE provides stainless-steel key recovery
- Supports 15 coins plus ERC-20 and ESDT tokens
Cons
- ZERO costs $398 before adding the $148 GRAPHENE backup
- LIQUID maintenance can interrupt portfolio syncing
- LIQUID notifications were used in a seed-phishing scam in October 2026
- The LIQUID app natively supports fewer assets than EVM integrations
- QR signing adds manual steps to transactions
Our review
3.7/5
Good
NGRAVE ZERO offers unusually strong offline protection and recovery design, but its premium price, limited native asset coverage and current LIQUID disruption reduce its convenience.
NGRAVE ZERO is a hardware wallet built around offline signing. Its clearest security advantage is the fully air-gapped design: ZERO has no USB, Bluetooth or Wi-Fi and communicates with LIQUID through QR codes. Its secure element uses an STM32MP157C processor with hardware cryptography and secure boot.
GRAPHENE stores the key on separate stainless-steel plates, and the NGRAVE Perfect Key can be represented as either 64 hexadecimal characters or 24 words. That avoids relying only on a paper seed, but it adds a second product and another process to manage. The device supports 16 named networks, including Bitcoin, Ethereum, Solana, Polygon and Avalanche, plus Ethereum ERC-20, MultiversX ESDT tokens and Ethereum NFTs. That is useful coverage, though native support is narrower than the thousands of assets claimed by some competing hardware wallets. Rabby and MetaMask integrations extend access to EVM chains.
The main weaknesses are cost and dependence on the companion app. ZERO costs $398, GRAPHENE costs $148 separately, and the combo costs $498. LIQUID is currently under maintenance, so syncing may not work, while support responses are slower because of a ticket backlog. The recent fake LIQUID notifications and seed-stealing pages also show a practical phishing risk around the software layer, even though keys remain offline on ZERO. Anyone who entered a seed phrase or Perfect Key into the fake page is told to move funds to a new wallet.
NGRAVE is a Belgian company founded in 2018 and remains active, selling through its store and Amazon US. The product suits long-term self-custody holders who prioritise air-gapped signing and a large screen. It also includes a durable recovery backup.
Specs
| Price from | $398 · unverified |
|---|---|
| Connectivity | QR code (air-gapped) · unverified |
| Secure element | Yes · unverified |
| Display | Touchscreen · unverified |
| Air-gapped signing | Yes |
| Bitcoin-only | No · unverified |
| Supported assets | 15 · unverified |
| Companion app | NGRAVE LIQUID · unverified |
| Touchscreen | Yes · unverified |
| Backup options | NGRAVE GRAPHENE stainless-steel backup, 24-word seed phrase, NGRAVE Perfect Key · unverified |
Not disclosed by the provider: KYC required, Firmware, Battery, BIP39 passphrase, Multisig support, NFC.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Key features
Air-gapped signing
ZERO has no USB, Bluetooth or Wi-Fi connection. It signs transactions through two-way QR codes with the LIQUID app.
EAL7 certification
The device uses NGRAVE OS with secure boot and hardware cryptography, and carries EAL7 security certification.
Touchscreen and biometrics
A 4-inch touchscreen handles setup and transaction review, while biometric checks protect device access.
Perfect Key backup
ZERO displays its 256-bit key as a hexadecimal Perfect Key or a 24-word mnemonic.
Steel recovery backup
GRAPHENE stores the key in an encrypted stainless-steel backup, with its upper and lower plates kept separately.
Broad asset support
ZERO supports 15 listed coins plus Ethereum ERC-20 tokens, MultiversX ESDT tokens and Ethereum NFTs.
Web3 integrations
Rabby and MetaMask integrations support transactions on EVM-based chains while ZERO signs offline.
Inside NGRAVE
NGRAVE ZERO
ZERO generates and stores wallet keys, then signs transactions fully offline through QR codes. It has a 4-inch touchscreen, biometric security, a custom operating system and support for named networks plus Ethereum ERC-20 and MultiversX ESDT tokens.
NGRAVE GRAPHENE
GRAPHENE is an encrypted, recoverable stainless-steel backup for the ZERO wallet key. Its upper and lower plates are stored separately, and the backup is designed to withstand house fires.
NGRAVE LIQUID
LIQUID is the mobile app for managing crypto and NFTs without exposing wallet keys. It exchanges QR codes with ZERO for transaction signing and currently has syncing maintenance underway.
NGRAVE OS
NGRAVE OS is the custom operating system used by ZERO. The device update to firmware 1.8 added Universal QR Protocol support, faster scanning, Polygon tokens and improved fingerprint handling.
NGRAVE screenshots
What users say about NGRAVE
Reddit discussions describe NGRAVE’s security design positively and include some responsive support, while also raising concerns about long firmware gaps, device reliability, limited integrations, and quiet communication. The overall picture is mixed: confidence in the security model is offset by concerns about maintenance and usability.
In their own words
“I own a tangem as well as a keystone three pro but as far as securities is concerned, I prefer the NGRAVE zero”
“Remained unresponsive. There’s probably a lesson to be learned there to ensure the bootloader portion always gets overwritten so it would boot though boot what as the main OS/firmware fails to write. I had activated a ledger nano and I dislike them so much.”
“Firmware update bricked my zero Hadn’t used the zero in a year - year and a half. Reinitialize it, add wallets, pair phone. Super smooth, especially compared to another wallet I used just before. Notified of new firmware. Start upgrading. Somehow process failed. Won’t boot.”
“Okay 10 days start to feel worrying. Are you understaffed or something else? I think you posted last on X november 5th.”
“Initial experience,,, I will preface this by sayin this is off to a rocky start,,,, I got the grave zero today. The fingerprint process is trash. Fingerprints as a biometric is OLD tech, no excuse for th grave to be so poor at this.”
Scam warning: Fake LIQUID notifications are directing users to malicious websites that request their seed phrase or Perfect Key.
Scam warning: Malicious QR codes, fake support contacts, and related impersonation attempts can redirect transactions or compromise wallets.
Based on 149 Reddit posts and comments from the last 12 months, checked Oct 18, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
User reviews
No user reviews yet. Have you used NGRAVE? Share your experience below.
FAQ
Who founded NGRAVE?
NGRAVE was founded in Belgium in 2018 as a cryptocurrency security company. Its products include ZERO, GRAPHENE and LIQUID.
How much does NGRAVE ZERO cost?
NGRAVE ZERO costs $398. GRAPHENE costs $148 separately, while the ZERO and GRAPHENE combo costs $498.
Where can NGRAVE ZERO be bought?
ZERO is sold through the NGRAVE Store, Amazon US and authorised resellers listed by NGRAVE. The company ships from Belgium, and customs charges can apply outside the European Union.
Is NGRAVE ZERO safe to use?
ZERO keeps signing offline through QR codes and has EAL7 security certification, biometric checks and secure boot. In October 2026, NGRAVE warned about fake LIQUID notifications designed to steal seed phrases and Perfect Keys; keys entered into the fake page should be treated as compromised.
Which coins does NGRAVE ZERO support?
ZERO supports Bitcoin, Bitcoin Cash, Ethereum, Dash, Zcash, Litecoin, BNB, XRP, Dogecoin, Tezos, MultiversX, Groestlcoin, Solana, Stellar, Polygon and Avalanche. It also supports Ethereum ERC-20 tokens, MultiversX ESDT tokens and Ethereum NFTs, with additional EVM activity through Rabby and MetaMask.
Does NGRAVE have a token?
NGRAVE's listed products are the ZERO device, GRAPHENE backup and LIQUID app.
Latest from NGRAVE on X
October was a lot.
If you're rethinking about where your crypto lives, start simple: keys generated offline, signing on a screen you can verify, nothing connected to the internet ever.
That's self-custody.
That's what the ZERO was built for. ❄️
If you're rethinking about where your crypto lives, start simple: keys generated offline, signing on a screen you can verify, nothing connected to the internet ever.
That's self-custody.
That's what the ZERO was built for. ❄️
ZERO has been ghosting the internet since day one. 👻
The internet can't haunt what it can't reach.
Stay cold. Stay safe.❄️
Happy Halloween. 🎃 https://t.co/PKDHY7EWs8
The internet can't haunt what it can't reach.
Stay cold. Stay safe.❄️
Happy Halloween. 🎃 https://t.co/PKDHY7EWs8
✊
18 years ago today, Satoshi published nine pages describing money with no one in charge.
Holding your own keys is how you keep it that way. ❄️
Happy Bitcoin Whitepaper Day.
Holding your own keys is how you keep it that way. ❄️
Happy Bitcoin Whitepaper Day.
Recent public posts from @ngrave_official, shown as published. Not reviewed or endorsed by CryptoReview.
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