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Coldcard vs Tangem Wallet

Comparing
two wallets
Decided by
Editorial rating
Last reviewed
2026-08-25
Coldcard3.4Bitcoin-onlyWarning

Bitcoin-only air-gapped signer whose seed generation was weakened by a build error from March 2021 until fixed firmware landed on July 31, 2026.

Tangem Wallet3.8

A smart card you tap against your phone, sold only in sets of two or three so your backup is another card rather than a written seed.

Verdict: Tangem Wallet

Tangem Wallet rates higher on our rubric: 3.8 against 3.4 for Coldcard.

Criterion
Editorial rating
Coldcard
3.4
Tangem Wallet
3.8

Coldcard and Tangem Wallet, fact by fact

Every row is from the two reviews as of their review dates, with sources on each. A check marks the side a decidable criterion favours; rows without one are information, not a score.

Coldcard and Tangem Wallet compared fact by fact from their reviews; a check marks the side a decidable criterion favours.
FactColdcardTangem Wallet
Editorial rating3.43.8 (favoured on this row)
StatusCaution: see the reviewAvailable
Made byCoinkiteTangem
Price$189$59.9
Who holds the keysself-custodial, keys held behind two secure elements from different vendors, signing air-gapped by choiceself-custodial, keys generated and held inside each card's certified chip, with no seed phrase by default
Bitcoin-onlyYesNo
Runs onWindows, macOS, LinuxiOS, Android
ScreenQ: 3.2 inch LCD with a full keyboard. Mk5: bright OLED with a numeric keypadNone. The card has no display, so you verify transactions on your phone
ConnectivityUSB-C, microSD, NFC, QR scanner on the Q and a virtual disk mode, every path off by defaultNFC tap against a phone running the Tangem app
ReleasedCoinkite has made Coldcard since 2017; the Q and the Mk5 are the current modelsNot stated
Countries on the maker's listNo published list201
Last reviewed2026-08-252026-08-25

Pros and cons, side by side

Coldcard

What works

  • Bitcoin only, which keeps every other chain's parsing code off the device
  • Two secure elements from independent vendors, so one chip flaw is not enough
  • Air-gapped signing over QR, microSD, NFC or virtual disk, with all data paths disabled by default
  • Reproducible open source firmware that advanced users can build and verify themselves
  • Duress PIN, brick PIN and login countdown for coercion scenarios
  • Coinkite's advisory published the technical cause, the entropy estimates and step by step migration instructions

What to watch

  • A March 2021 build error weakened seed generation for over five years, and updating the firmware does not repair an affected seed
  • Migrating means generating a new seed and moving every coin, which costs an on-chain transaction and real care
  • Coinkite publishes no loss total, so the scale rests on outside estimates from TRM Labs and Galaxy Research
  • Steeper learning curve than a Ledger or a Trezor, with no companion app of its own
  • Coinkite publishes no shipping country policy at all

Tangem Wallet

What works

  • Keys are generated inside a certified chip and never leave it, with no seed phrase to steal by default
  • Sold in sets of two or three, so the backup is a second card rather than a written phrase
  • Nothing to charge, connect or cable up: you tap the card against your phone
  • Tangem states that no Tangem server sits between your card, your phone and the blockchain
  • Buy and swap are built into the app

What to watch

  • No screen, so you verify transaction details on the phone rather than on the device itself
  • Lose every card in the set without having created a seed phrase and the funds are unrecoverable
  • Not bitcoin-only
  • Tangem refuses delivery to 40 named jurisdictions, Colombia, Laos and Vietnam among them

Frequently asked questions

Is Coldcard or Tangem Wallet better?

Tangem Wallet rates higher on our rubric: 3.8 against 3.4 for Coldcard. The rating follows the product rubric published on our about page; the rows above set custody, price and platforms side by side so you can check it.

Which is cheaper, Coldcard or Tangem Wallet?

Tangem Wallet, at $59.9 against $189, on each maker's own store price as of the review date.

Is Coldcard or Tangem Wallet bitcoin-only?

Coldcard is bitcoin-only; Tangem Wallet supports other assets too. Multi-asset, with buy and swap built into the app

Does Coldcard or Tangem Wallet carry a warning?

Coldcard: A build error introduced in a March 2021 firmware migration left seed generation drawing on a software pseudorandom number generator instead of the hardware one, and attackers found it before Coinkite did. Coinkite published fixed firmware for every affected model and updated its advisory on August 1, 2026, but updating does not repair a seed already generated on affected firmware: those owners have to create a new seed and move their coins.

The full reviews: Coldcard and Tangem Wallet, each with its sources, and every wallet we review.

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