Mobile apps

2FA

Apps that live on your phone for second-factor codes. Pick one that stores secrets locally and lets you back up an encrypted vault — avoid cloud-only services that lock you into their vendor.

Aegis

2FA

Open-source TOTP authenticator for Android; encrypted backups, no cloud sync required.

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Ente Auth

2FA

Open-source 2FA app with end-to-end encrypted cloud sync across devices.

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