Freedom251 › Authenticator apps
Authman
by Authman
What Authman is
Authman is a free, open-source TOTP authenticator for managing two-step verification tokens and syncing them across devices. It supports iOS, Android, Windows, and Mac, and is released under the GPL-3.0 License. Authman uses the Secure Remote Password protocol and says plain passwords are never stored or transmitted to its server. Tokens are encrypted on the device, while encrypted token data is sent to the server. The FAQ describes Argon2 password derivation and XSalsa20 authenticated encryption through libsodium. Touch ID or Face ID can unlock the app, and it locks automatically after more than five minutes without activity. Users can assign Font Awesome icons or their own images to accounts, export all tokens to JSON, and import tokens from another Authman account. The privacy policy says the email address is the only personal data collected. Accounts and tokens can be deleted from the app, but deletion is irreversible and has no backup. Windows Store and Linux builds remain in development.
Who it suits
It suits people who want a free, cross-platform TOTP app with device syncing, encrypted token storage, and import or export tools. Users should be comfortable with the stated password-recovery and platform limitations.
What it does well
- Free plan
- Cross-platform token syncing
- GPL-3.0 open source
- Encrypted token storage
- JSON import and export
What to know first
- Forgotten passwords cannot be reset
- Deleted data has no backup
- Windows Store and Linux are in development
- App locks after five minutes inactive
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | No paid plans or usage limits stated | Free |
As authman.simular.co lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
Authman offers a free, open-source way to manage synchronized TOTP tokens across several platforms, with documented encryption and account controls. Password recovery is unavailable, deletion cannot be undone, and some platform builds are still developing.
Facts from Authman's own pages
- Account deletion
- Users can delete their account and tokens from the app, and the privacy policy says this deletion is irreversible and has no backup. · authman.simular.co, 11 Oct 2026
- App lock
- The app automatically locks after more than five minutes without user activity. · authman.simular.co, 11 Oct 2026
- Biometrics
- Authman supports Touch ID or Face ID to unlock the app. · authman.simular.co, 11 Oct 2026
- Code type
- totp · authman.simular.co, 22 Sept 2026
- Customization
- Users can assign each 2FA account a custom image or icon, using built-in Font Awesome icons or their own uploaded or pasted image. · authman.simular.co, 11 Oct 2026
- Data collected
- The privacy policy says the user's email address is the only personal data collected. · authman.simular.co, 11 Oct 2026
- Encryption methods
- The FAQ says Authman derives passwords with Argon2 and encrypts tokens and keys with the XSalsa20 authenticated cipher via libsodium. · authman.simular.co, 11 Oct 2026
- Free plan
- Yes · authman.simular.co, 22 Sept 2026
- Headquarters
- Taipei, Taiwan · authman.simular.co, 28 Sept 2026
- Import and export
- Users can export all tokens to JSON and import tokens from another Authman account. · authman.simular.co, 11 Oct 2026
- Multi-device sync
- Yes · authman.simular.co, 22 Sept 2026
- Open source
- Authman is released under the GPL-3.0 License. · authman.simular.co, 11 Oct 2026
- Password recovery
- The FAQ says forgotten passwords cannot currently be reset and the associated 2FA tokens cannot be recovered. · authman.simular.co, 11 Oct 2026
- Platform limits
- The guide says Windows Store and Linux are still in development, and building from source is still in process. · authman.simular.co, 11 Oct 2026
- Platforms
- The installation guide lists iOS, Android, Windows NSIS, and macOS App Store or DMG as supported platforms. · authman.simular.co, 11 Oct 2026
- Purpose
- Authman manages 2-step authentication tokens and syncs them between devices. · authman.simular.co, 11 Oct 2026
- Sign-in security
- Authman uses the Secure Remote Password protocol and says plain passwords are never stored or transmitted to its server. · authman.simular.co, 11 Oct 2026
- Supported platforms
- iOS,Android,Windows,Mac · authman.simular.co, 22 Sept 2026
- Token encryption
- Tokens are encrypted on the device, and the server receives encrypted token data. · authman.simular.co, 11 Oct 2026
- TOTP app
- The product describes itself as a cross-platform 2FA TOTP app. · authman.simular.co, 11 Oct 2026
Where Authman stands on Freedom251
- Authenticator apps#35 of 111