Freedom251 › Authenticator apps
Tofu Authenticator
What Tofu Authenticator is
Tofu Authenticator is a free iOS app that generates one-time passwords for online account sign-ins. It supports time-based and counter-based codes, producing six- or eight-digit passwords with SHA1, SHA256, or SHA512. Accounts can be added by scanning an issuer’s QR code, then found by name in the app. Tofu works with services using HOTP or TOTP, including Google, Facebook, Dropbox, Amazon, and GitHub. It needs no network or cellular connection, so codes remain available in airplane mode. Account details and shared secrets are stored in the iOS Keychain. Tofu is open-source free software under the ISC license, with source code available for review and modification. The app is designed specifically for iOS and has no free trial because it is free. One recovery limitation matters: restoring an iPhone from an iCloud backup does not migrate accounts automatically. An automated transfer requires a password-protected iTunes or Finder backup.
Who it suits
Tofu Authenticator suits iPhone users who need offline HOTP or TOTP codes and prefer open-source software. It fits accounts that provide issuer QR codes for setup.
What it does well
- Free iOS app
- Works without network or cellular service
- Supports HOTP and TOTP
- Stores secrets in iOS Keychain
- Source code is open for review
What to know first
- Designed for iOS only
- iCloud restore does not migrate accounts
- Transfer requires a password-protected computer backup
- No free trial
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Free software; iOS app | Free |
As tofuauthenticator.com lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
Tofu Authenticator is a free, offline iOS option for standard HOTP and TOTP sign-ins. Plan account recovery carefully because iCloud restoration alone does not transfer accounts.
Facts from Tofu Authenticator's own pages
- Account search
- Users can search their accounts by name. · tofuauthenticator.com, 12 Oct 2026
- Code type
- totp and hotp · tofuauthenticator.com, 21 Sept 2026
- Compatibility
- Tofu works with services that use HOTP or TOTP for two-factor authentication. · tofuauthenticator.com, 12 Oct 2026
- Credential storage
- Account details and shared secrets are stored in the iOS Keychain. · tofuauthenticator.com, 12 Oct 2026
- Encrypted backup
- Yes · tofuauthenticator.com, 21 Sept 2026
- Example services
- The site names Google, Facebook, Dropbox, Amazon, and GitHub as example services used with Tofu-generated codes. · tofuauthenticator.com, 12 Oct 2026
- Free plan
- Yes · tofuauthenticator.com, 21 Sept 2026
- Intended platform
- The maker describes Tofu as a two-factor authentication app designed specifically for iOS. · tofuauthenticator.com, 12 Oct 2026
- Offline use
- The app requires no network or cellular connection and can be used in airplane mode. · tofuauthenticator.com, 12 Oct 2026
- Open source
- Tofu is open-source free software licensed under ISC, and its source code is available for review and modification. · tofuauthenticator.com, 12 Oct 2026
- OTP support
- Tofu supports counter-based and time-based one-time passwords with 6 or 8 digits using SHA1, SHA256, and SHA512. · tofuauthenticator.com, 12 Oct 2026
- Purpose
- Tofu generates one-time passwords to help protect online accounts when signing in. · tofuauthenticator.com, 12 Oct 2026
- QR scanning
- Users can scan an issuer’s QR code to add an account automatically. · tofuauthenticator.com, 12 Oct 2026
- Recovery limitation
- Tofu accounts do not migrate when restoring an iPhone from an iCloud backup; an automated move requires a password-protected iTunes or Finder backup. · tofuauthenticator.com, 12 Oct 2026
- Support
- The site directs users to its FAQ and says they can file an issue or submit a pull request on GitHub. · tofuauthenticator.com, 12 Oct 2026
- Supported platforms
- ios · tofuauthenticator.com, 21 Sept 2026
Where Tofu Authenticator stands on Freedom251
- Authenticator apps#80 of 111