Tofu Authenticator review
A focused offline authenticator for iPhone users who want open-source OTP support.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Tofu Authenticator is a free, open-source two-factor authentication app for iPhone users who need HOTP and TOTP codes without network or cellular connectivity. It supports QR-code enrollment, QR-image imports, account search, six- and eight-digit codes, and SHA1, SHA256, and SHA512 algorithms. The app is aimed at individual users rather than teams or enterprise administrators, making its appeal strongest for people who want a focused iOS authenticator with offline operation.
The free plan is the entire product: there is no paid tier to compare, and the published pricing model is free. Its feature set covers both time-based and counter-based one-time passwords, while account details are stored in the iOS keychain. QR-code enrollment can simplify adding accounts, and searching by account name helps when several services are stored. This narrow scope keeps the app centered on code generation rather than broader account administration or team controls.
Backup and platform fit are the main considerations before choosing Tofu. Accounts can be restored from password-protected Finder or iTunes backups, but they do not migrate through iCloud backups. The app is designed for iPhone and is not verified for macOS, so it suits users committed to Apple mobile hardware more than people who need cross-platform access. Choose Tofu for free, open-source, offline HOTP and TOTP support on iOS; choose an alternative if iCloud migration, macOS support, or team administration is essential.
Tofu Authenticator pros and cons
- Where it wins
- Free, open-source iOS app with no paid tier
- Supports HOTP, TOTP, six- and eight-digit codes
- Works offline and stores account details in iOS keychain
- Where it doesn't
- Available only on iOS
- Accounts do not migrate through iCloud backups
- Primarily designed for individuals, not teams or enterprises
Tofu Authenticator fact sheet, pricing and score →
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