A non-custodial mobile wallet for Bitcoin XBT and Bitcoin BTC, locked with your fingerprint. Your recovery phrase is generated on your phone, encrypted there, and never leaves it.
- Locked with your fingerprint (or face, or device PIN): the key that opens the app is held in your phone's secure hardware (StrongBox or the TEE) and is released only when you unlock - one unlock opens every wallet.
- Locks itself a minute after you leave it, and clears your keys from memory; swaps carry on in the background.
- Asks again before it shows your recovery phrase or sends coins.
- Your recovery phrase is encrypted on the phone (Argon2id + XChaCha20-Poly1305) and never sent anywhere.
- Every screen is kept out of screenshots, screen recordings and the recent-apps view.
- Swap BTC <-> XBT with another person: atomic and non-custodial (on-chain HTLCs, nobody holds your coins in the middle). Post an offer, take one from the list, or swap privately by code; it runs in the background, a cancelled match releases your coins back within minutes, and "Find my swaps" recovers them from your phrase on a new phone.
- 12- or 24-word BIP-39 phrase, BIP-84 native SegWit, optional passphrase.
- Up to 10 named wallets, any mix of XBT and BTC, from the one phrase.
- Send and receive with QR codes, a built-in camera scanner, or paste.
- Fee presets or a custom sat/vB rate; "take the fees out of this amount"; sweep a whole balance.
- History with a tap-through to a block explorer; approximate value in USD, EUR or 28 other currencies (Settings -> Currency).
- Connect a hardware wallet (Keystone, Passport, SeedSigner, Jade and others) as a view-only BTC wallet by scanning its account QR.
- Cross-chain replay protection: SIGHASH_UNIFIED on every XBT send (automatic), plus an optional oversized OP_RETURN on BTC sends.
- Extra entropy from your hands: shake the phone, scribble on screen, or CPU-timing jitter, folded into the seed.
- In 75 languages, picked in Settings or following your phone.
- No analytics, no ads, no third-party SDKs; the backend only ever sees public addresses and finished signed transactions - no account, no sign-up.
Standard, portable keys - restore the same phrase in any BIP-84 wallet. Open source (MIT). No Google Play Services.