Alternatives to Google Authenticator

Google's mobile app that generates one-time verification codes for two-step verification. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as Google Authenticator.

  • Microsoft Authenticator

    Microsoft's mobile authenticator app for multi-factor and passwordless sign-in to personal and work accounts.

    FreeProprietaryAndroidiOS

    Microsoft Authenticator is also a free closed-source mobile app, adding passwordless sign-in for Microsoft and work accounts rather than Google Account sync.

  • Bitwarden Authenticator

    A standalone mobile app from Bitwarden that generates and stores two-step verification codes.

    FreeProprietaryAndroidiOS

    Bitwarden Authenticator is a free, standalone mobile app from a password manager vendor, with little published detail about import, export or backup.

  • FreeOTP

    An open-source two-factor authentication app for Android and iOS that generates one-time codes.

    FreeOpen sourceAndroidiOS

    FreeOTP is open source, available on F-Droid as well as Google Play and the App Store, and has no Google Account sync.

Also worth comparing

These listings name Google Authenticator as their own alternative, so the relationship runs both ways.

  • 2FAS

    Open-source authenticator app with browser-extension push approvals.

    FreeOpen sourceAndroidiOSBrowser extension

    Google Authenticator syncs codes through a Google Account instead of your own cloud drive, is closed source and has no browser extension for push approvals.

  • Aegis Authenticator

    An encrypted two-factor authentication app for Android with real backups and imports from every other authenticator.

    FreeOpen sourceAndroid

    Google Authenticator adds iOS and optional sync through a Google Account instead of backups you control, and it is closed source.

  • Authenticator

    A GNOME desktop app that generates two-factor authentication codes using the TOTP and HOTP standards.

    FreeOpen sourceLinux

    Google Authenticator moves your codes from the Linux desktop to an Android or iOS phone, is closed source, and offers optional sync through a Google Account.

  • Authy

    Mobile two-factor authenticator with encrypted cloud backup.

    FreeProprietaryAndroidiOS

    Google Authenticator also syncs codes across devices, through a Google Account rather than a phone number, and is likewise closed source and mobile only.

  • Duo Mobile

    Enterprise multi-factor authentication app with push approvals.

    FreeProprietaryAndroidiOS

    Google Authenticator generates TOTP codes offline with optional Google Account sync, without the push approvals of an organisation's Duo deployment.

  • Ente Auth

    Open-source two-factor authenticator with end-to-end encrypted backups.

    FreeOpen sourceWindowsmacOSLinuxAndroidiOSWeb

    Google Authenticator is closed source and mobile only, and its optional sync ties your codes to a Google Account.

  • Proton Authenticator

    A free two-factor authentication app from Proton with end-to-end encrypted sync between your devices and no advertising.

    FreeOpen sourceWindowsLinuxAndroid

    Google Authenticator is closed source and mobile only, with optional sync tied to a Google Account instead of a Proton account.

  • Step Two

    A two-step verification code app for iPhone, iPad, Apple Watch and Mac with iCloud backup.

    PaidProprietarymacOSiOSBrowser extension

    Google Authenticator is free on iOS and Android, is closed source and mobile only, and syncs codes through a Google Account instead of iCloud.

  • Stratum

    A free and open-source two-factor authentication app for Android with encrypted backups and Wear OS support.

    FreeOpen sourceAndroid

    Google Authenticator is closed source on Android and iOS, with optional code sync through a Google Account instead of local encrypted backups.

  • Yubico Authenticator

    An app that shows two-factor codes from OATH credentials stored on a YubiKey.

    FreeProprietaryWindowsmacOSLinuxAndroidiOS

    Google Authenticator stores codes on an Android or iOS phone rather than hardware, with optional Google Account sync, and has no desktop app.

Similar software

Related functionality, not a direct replacement.