All Wallets Compared
Head-to-head comparison

Tangem vs OneKey: which cold wallet actually fits you?

One is a set of tap-to-sign NFC cards with no screen and no seed phrase; the other is a touchscreen wallet built entirely on open-source firmware with hardware-level secure elements. We compare the security model, the setup experience and the price so you can pick with your eyes open.

01

Quick verdict

Tangem
Choose Tangem if…
You want the simplest possible onboarding — tap a card, you're done in about 3 minutes — with no seed phrase to write down, and you're comfortable with a mobile-only app.
OneKey
Choose OneKey if…
You want fully open-source, independently verifiable firmware, a physical screen to check every transaction, and hardware-level protection spread across four separate secure elements on the Pro model.
The real choice here isn't which one is more secure on paper — both use certified EAL6+ chips. It's whether you'd rather trust a card with no screen, or verify every transaction yourself on a touchscreen.

In short: Tangem

Tangem is a seedless NFC card wallet launched in 2018, with more than 8 million cards sold. It uses an EAL6+ certified secure element, needs no screen or battery, and has been independently audited by Kudelski, Riscure and Cure53. Its firmware can never be patched — a strength against remote attacks, but the reason a 2026 laser fault-injection disclosure and a 2025 logging bug can't simply be fixed on cards already in the wild.

In short: OneKey

OneKey is a touchscreen hardware wallet with fully open-source firmware and companion app, independently verifiable unlike closed-source competitors. The Pro model uses four separate EAL6+ certified secure elements rather than just one, and adds a SignGuard layer that flags risky transactions before you approve them. It has been SlowMist-audited, though one older, discontinued model was the subject of a publicly documented hack.

02

Side-by-side comparison

TangemOneKey
TypeNFC card (seedless)Touchscreen / card
ScreenNone3.5" touch (Pro)
ConnectivityNFC tap onlyUSB-C + BT + QR
ChipEAL6+4× EAL6+ (Pro)
Open sourceNoYes
From$54.90$79

Figures compiled from official specifications and manufacturer pages (2026) — always verify current specs and pricing on each manufacturer's website before buying.

03

FAQ

Which is more beginner-friendly, Tangem or OneKey?

Tangem is built specifically for beginners: tap a card to your phone and you're set up in about 3 minutes, with no seed phrase to manage. OneKey has a slightly steeper learning curve since it uses a screen, a PIN and, on models that support it, a recovery seed — but that screen also lets you verify transaction details directly on the device rather than trusting your phone's display.

Is Tangem's lack of a screen a security problem?

It's a genuine trade-off rather than a flaw. Without an on-device screen, you're trusting your phone's display to show the real transaction details, which is a different risk model than OneKey's approach of showing and confirming details directly on the wallet's own screen.

Which one is actually open-source?

OneKey is fully open-source across its firmware and companion app, independently reviewable on GitHub. Tangem's firmware is closed and permanently unpatchable by design — which is intentional on Tangem's part, since it also means no firmware update can ever be pushed remotely, for better or worse.

Can I lose access permanently with either wallet?

Yes, in different ways. Lose every Tangem card without a separately configured backup and the funds are gone forever, since access-code recovery isn't possible after setup. OneKey wallets that use a recovery seed can be restored on a new device if that seed is safely backed up; models without a seed carry a similar all-or-nothing risk to Tangem.

Which is cheaper to get started?

Tangem's 2-card set starts at $54.90. OneKey starts at $79 for the Classic and rises to $278 for the Pro with its touchscreen, fingerprint sensor and wireless charging — so Tangem is the lower-cost entry point of the two.

Please read

Important risk information

  • Always research any hardware wallet before using it — buy directly from the manufacturer or an authorized reseller, never a pre-activated device from a marketplace listing.
  • Firmware, audits, pricing and country availability change over time — verify current specifications directly on each manufacturer's website before relying on this comparison.
  • Not financial advice: this page is independent editorial content for information only and is not affiliated with Tangem or OneKey.

Ready to get one?

Both links below are our own referral links — buying through them costs you nothing extra and helps support this independent comparison.

Get Tangem → Visit OneKey.com →
Referral code:BYRSYP Referral code:15FYN3

If you buy through our links we may receive a commission — at no extra cost to you. Our assessments, including all criticism, are editorially independent of commissions; referral disclosure: this site is partly financed through referral/affiliate links, where available.