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Authenticator
in developmentMulti-Factor Authentication
A fast, private MFA app that never phones home.
Overview
Authenticator generates your TOTP and HOTP codes entirely on-device, with nothing to sign up for and nothing to track. It's the standalone companion to Vault: scan a QR code, organize tokens into folders, and unlock with biometrics or a PIN. Your secrets stay in your phone's secure enclave.
Runs on
What it does
- TOTP and HOTP codes with smooth live countdowns
- Scan QR codes or enter keys by hand
- Encrypted on-device storage (Keychain / Keystore)
- Biometric or PIN unlock with lockout after repeated failures
- Folders, search, tags, and bulk actions
- No account, no internet, and no analytics, ever
Cloud option
Local-only by design. Optional encrypted backup & sync (pairing with Vault) is on the roadmap and will always be opt-in.
Prefer to run your own server? Self-hosting is always free.
Authenticator is open source
Read it, file an issue, or send a patch.