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FreeOTP review

Free#76 of 111 in Authenticator Apps

A free, standards-based authenticator for users who value open source over synchronization.

3.0/10Editor score
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

FreeOTP is a free, open-source two-factor authentication app from Red Hat for Android and iOS. It generates one-time passwords using the HOTP and TOTP standards, and users can add tokens by scanning QR codes or configuring services that support those standards. Its standards-compliant operation does not require a proprietary server-side component, making it a fit for individuals and teams using compatible authentication services, including FreeIPA.

Its strongest practical advantage is the combination of open-source distribution and straightforward token support. The published feature set covers QR-based setup, HOTP code generation, TOTP code generation, and encrypted backup workflows. Android users can back up tokens to a Google Account or create a manual encrypted backup and restore it. On iOS, encrypted backup and restore use Apple backup functionality and Keychain storage, while biometric locking protects tokens. These options make FreeOTP a good choice for users who want portable recovery workflows without moving away from standard one-time-password methods.

FreeOTP is most suitable when the priority is a focused, standards-based authenticator rather than centralized administration or a broader authentication platform. Its design centers on generating HOTP and TOTP codes, so organizations seeking a proprietary server-side component, team administration, or a different approval workflow should consider another product. Users should also account for the distinct backup approaches on Android and iOS. Choose FreeOTP for a free, open-source mobile authenticator with encrypted backups; choose an alternative when synchronized administration across devices or managed team controls are central requirements.

FreeOTP pros and cons

  • Where it wins
    • Free and open source with HOTP and TOTP support
    • QR-code token setup on Android and iOS
    • Encrypted backup and restore options on both platforms
  • Where it doesn't
    • Focused on HOTP and TOTP code generation
    • Backup workflows differ between Android and iOS
    • No proprietary server-side component for centralized administration

FreeOTP fact sheet, pricing and score →

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