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BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7
Comparing 3 wallets: BitBox02 Nova (75/100, $149), Ngrave Zero (61/100, $398), and Trezor Safe 7 (90/100, $249). Prices range from $149 to $398.
3 wallets
Open-source vs Closed
No IP rating vs IP55
$249 price gap
Quick VerdictUpdated 2026
BitBox02 Nova
Best value
$149
Ngrave Zero
Ngrave
$398
Trezor Safe 7
Best overall
$249
Key Takeaways
- Trezor Safe 7 wins in security (100/100)
- Trezor Safe 7 wins in ease of use (79/100)
- BitBox02 Nova is more affordable ($149)
- Best for beginners: Trezor Safe 7 (easier setup)
BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7: Key Differences
Picking between 3 hardware wallets (BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7) usually comes down to a handful of trade-offs, not a single winner. Prices run from $149 to $398; overall scores from 61 to 90/100 — and the spread tells a story. Here's where each one earns its keep, and where it falls short.
Detailed Pair Comparisons:
Winner by Category
Which wallet leads in each area
Security
BitBox02 Nova94/100
Ngrave Zero73/100
Trezor Safe 7Winner100/100
Ease of Use
BitBox02 Nova65/100
Ngrave Zero71/100
Trezor Safe 7Winner79/100
Price
BitBox02 NovaWinner$149
Ngrave Zero$398
Trezor Safe 7$249
Coin Support
BitBox02 Nova8+
Ngrave Zero15+
Trezor Safe 7Winner50+
Privacy
TieBitBox02 Nova96/100
Ngrave Zero34/100
Trezor Safe 793/100
Beginner Friendly
BitBox02 Nova65/100
Ngrave Zero71/100
Trezor Safe 7Winner79/100
Comparing:
BitBox02 Nova
Ngrave Zero
Trezor Safe 7
Comparison Table
Key specifications for your decision
| Criteria | BitBox02 Nova BitBox $149 | Ngrave Zero Ngrave $398 | Trezor Safe 7 Trezor $249 |
|---|---|---|---|
Overall Rating | 75 | 61 | 90 |
Security | 94 | 73 | 100 |
Usability | 65 | 71 | 79 |
Price | $149 | $398 | $249 |
EAL Certification (Evaluation Assurance Level) from Common Criteria rates the security of hardware components, like secure chips in crypto hardware wallets. Higher levels, such as EAL5+ or EAL6+, indicate stronger resistance to attacks. Learn more | Yes | Yes | Yes |
Open Source Firmware refers to firmware in hardware devices, like wallets, where the source code is publicly available, allowing transparency, auditability, and customization. Learn more | Yes | No | Yes |
Bluetooth Connectivity enables wireless communication between devices, like hardware wallets and smartphones, using Bluetooth or Bluetooth Low Energy (BLE) for secure data transfer. Learn more | No | No | Yes |
USB | Yes | No | Yes |
Networks | 8+ | 15+ | 50+ |
A passphrase is an additional security layer for cryptocurrency wallets, acting as a 25th word in the BIP39 seed phrase, protecting access to hidden wallets. Learn more | Yes | Yes | Yes |
A touchscreen display is a screen that allows users to interact with a device by touching the surface, commonly used in hardware wallets for easy navigation and transaction confirmation. Learn more | OLED | LCD Capacitive Touchscreen (480x800, 600 Cd/M²) | Color Touchscreen |
Recovery is the process of restoring access to a cryptocurrency wallet using its seed phrase or mnemonic backup if the original wallet is lost or inaccessible. Learn more | 24-word seed | 24-word seed | Multi-card |
Setup Time | ~10 min | ~20 min | ~5 min |
IP Rating refers to the level of protection a device has against dust and water, often used for hardware wallets to indicate their durability in various environments. Learn more | None | IP55 | IP67 |
Our Verdict: BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7
Choose BitBox02 Nova if...
- You are comfortable managing a seed phrase
- You prefer USB-only connection for maximum security
- You want to save $100 without sacrificing core security
Skip BitBox02 Nova if...
- ×You manage crypto from an iPhone (no iOS app here)
- ×You want Shamir Secret Sharing for split, geographically distributed backups
- ×You want a seedless backup design instead of a 12/24-word phrase
Choose Ngrave Zero if...
- You trust third-party audits (Common Criteria EAL7 certification of integrated ProvenCore TEE (Prove & Run)) over open-source review
- You are comfortable managing a seed phrase
Skip Ngrave Zero if...
- ×Open-source firmware is non-negotiable for you
- ×Budget is tight — you'd be better served by a cheaper option in this comparison
- ×You want Shamir Secret Sharing for split, geographically distributed backups
Choose Trezor Safe 7 if...
- You want advanced backup with Shamir Secret Sharing
- You prefer seedless backup via multiple linked cards
- You actively use DeFi and WalletConnect dApps
Skip Trezor Safe 7 if...
- ×Budget is tight — you'd be better served by a cheaper option in this comparison
Our pick for most users
Based on the overall rating, Trezor Safe 7 scores 90/100 and offers the best balance of security, usability, and value in this comparison.
Bottom line: Trezor Safe 7 is our pick — it leads on both security and ease of use, and the overall score reflects that. If budget is real, BitBox02 Nova comes in $249 cheaper without giving up the basics.
Price: BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7
Prices range from $149 (BitBox02 Nova) to $398 (Ngrave Zero). The extra cost of Ngrave Zero gets you a -14-point higher overall rating. For budget buyers, BitBox02 Nova offers solid security at a lower price point.
Who Should Pick Which Wallet
Recommendations based on real-world use cases
BitBox02 Nova
$149Better privacy featuresCoin controlCoinJoin supportTor support
Pros
- +ATECC608B secure element with secure boot prevents firmware tampering
- +Fully open-source firmware with reproducible builds for independent verification
- +Genuine device attestation check built into BitBoxApp on every connection
- +Encrypted microSD card backup eliminates single-point seed exposure risk
Cons
- −No Bluetooth or NFC — requires physical USB connection for every transaction
- −No Shamir Secret Sharing; seed backup is all-or-nothing unlike Trezor Model T
- −0.96-inch OLED screen is smaller than competitors like Ledger Flex or Keystone
- −No iOS compatibility limits mobile use to Android devices only
Ngrave Zero
$398Water resistanceBuilt-in batteryAndroid supportiOS support
Pros
- +Fully air-gapped — QR-only signing with no USB data, Bluetooth, NFC or WiFi
- +EAL7-certified ProvenCore operating system, the highest assurance tier for a device OS
- +Biometric fingerprint sensor plus an 8-digit PIN, with tamper-triggered auto-wipe
- +Proprietary Perfect Key generation and the steel GRAPHENE backup ecosystem
Cons
- −Closed-source firmware that fails WalletScrutiny reproducibility checks
- −Premium price ($398, and more with the GRAPHENE backup)
- −No built-in WalletConnect; dApp access relies on MetaMask/Rabby
- −QR-only workflow is slower than USB or Bluetooth signing
Trezor Safe 7
$249Water resistanceBuilt-in batteryBetter privacy featuresCoin control
Pros
- +TROPIC01 open secure element allows full auditability, unlike closed SE chips
- +EAL6+ certified secure element, highest certification tier among consumer wallets
- +SLIP-39 Shamir Secret Sharing splits seed across multiple shares by default
- +2.5-inch color touchscreen is the largest display in its hardware wallet class
Cons
- −At $249, it is the most expensive Trezor model, nearly 3x the Trezor Model One
- −No NFC support, limiting tap-to-sign workflows available on competing devices
- −Bluetooth attack surface introduces wireless threat vectors absent in USB-only wallets
- −Multisig support is basic only, lacking advanced coordinator tooling on-device
Best for These Profiles
Pre-Purchase Checklist
Important points to verify regardless of your choice
All wallets ship from official manufacturer stores with full warranty.
BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7: Frequently Asked Questions
Answers about BitBox02 Nova vs Ngrave Zero vs Trezor Safe 7
Is BitBox02 Nova better than Ngrave Zero?
On the numbers, BitBox02 Nova comes out ahead — 75/100 vs 61/100 — but 'better' isn't quite the right frame. Ngrave Zero is easier to use (71/100 usability), which matters more for some buyers than overall score does. If overall rating is what you actually weigh first, take BitBox02 Nova. If ease of use is the constraint that shapes your decision, Ngrave Zero is the smarter buy. Either way, both are real hardware wallets — neither is a mistake.
How much do BitBox02 Nova and Ngrave Zero and Trezor Safe 7 cost?
BitBox02 Nova costs $149, Ngrave Zero costs $398, Trezor Safe 7 costs $249. These are list prices for the standard edition from official manufacturer stores. A few things worth knowing: hardware wallet prices barely move during the year, so 'waiting for a sale' rarely pays off — Black Friday is the one exception, with 10–20% off being typical. Avoid third-party listings even if they're cheaper; the supply chain risk on a tampered device wipes out any savings the first time you load funds. And don't buy a 'used' hardware wallet, ever — even if it claims to be reset.
Can BitBox02 Nova be used on iPhone (iOS)?
No — BitBox02 Nova has no iOS app today, and there's no public roadmap for one. It works fine with Android, Windows, macOS, and Linux, but iPhone users are out of luck. If your primary device is an iPhone and you don't want a separate computer just to manage crypto, Ngrave Zero is the practical pick: it has a native iOS app and the full feature set works over Lightning or Bluetooth.
What happens if I lose all my Trezor Safe 7 cards?
Funds are unrecoverable. There's no seed phrase to fall back on, no recovery service, no manufacturer override — that's the explicit design trade-off. The mitigation is the multi-card set: every card you receive is a complete, independent backup of the same wallet. Realistic plan: keep one card on you, one at home in a safe, and one with a trusted person or in a bank deposit box. Lose any two and you're still fine. Lose all of them and the coins are gone forever.
Is BitBox02 Nova waterproof?
No — BitBox02 Nova has no official water or dust resistance rating, so treat it like any other small electronic. A spilled drink or a rainstorm in your jacket pocket is enough to brick it. Ngrave Zero, by contrast, carries an IP55 rating, which means it's tested against dust and pressurized water — that's the device you'd actually take camping or to a beach. For most people, water resistance isn't a deciding factor, but it matters if you travel light or carry your wallet daily.
Which wallet is better for DeFi and Web3: BitBox02 Nova or Ngrave Zero?
BitBox02 Nova — and the gap is bigger than the spec sheets make it look. BitBox02 Nova has WalletConnect built in, which means you sign DeFi transactions directly from a hardware wallet without exposing keys to a hot wallet. Ngrave Zero can technically work with DeFi via third-party software, but every extra step is one more place an attacker can intercept the transaction you're approving. If you're going to be clicking 'Sign' on smart contracts more than once a month, the difference compounds fast.
BitBox02 Nova vs Ngrave Zero: which has better backup options?
BitBox02 Nova uses a standard 24-word seed phrase. Ngrave Zero uses a standard 24-word seed phrase. Both work — but they reflect different ideas about what 'backup' should be. The seed phrase approach (BIP-39) is the open industry standard: portable across most wallets, well-documented, and recoverable on any compatible device. The downside is well-known too — it's a piece of paper that's a single photograph or careless moment away from disaster. Card-based backups can't be photographed and don't write themselves down, but they're proprietary, which means you trust one manufacturer to stay in business and keep the format alive. Pick based on which failure mode worries you more.
Is BitBox02 Nova more secure than Ngrave Zero because it's open-source?
Not automatically — and this is a more nuanced question than the marketing suggests. Open-source (BitBox02 Nova) lets anyone (researchers, hobbyists, paranoid users) read the firmware and verify there are no backdoors. That's the strongest possible trust signal. Ngrave Zero keeps source code private but compensates with paid third-party audits from Common Criteria EAL7 certification of integrated ProvenCore TEE (Prove & Run) and certifications like CC EAL5+/EAL6+ on the secure element. Open-source is the more transparent posture; audited closed-source can still be cryptographically airtight. Our honest take: if open-source is the deciding factor for you philosophically, pick BitBox02 Nova — but don't dismiss Ngrave Zero as 'less secure' purely on that basis.
Made your decision?
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More Comparisons
Compare BitBox02 Nova with other wallets
Official store
BitBox02 Nova$149 · 75/100
Ngrave Zero$398 · 61/100
Trezor Safe 7$249 · 90/100
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