Data as of Sep 26, 2026 · Based on 4,029,442 AI responses across 13,338 prompts · See how Parse measures this
Proton Authenticatorproton.meProton Authenticator is an open-source, multi-platform two-factor authentication app that generates 6-digit codes for logins on iOS, macOS, Android, Windows, Linux, and Apple Watch, usable without a Proton account. It securely stores your 2FA codes with end-to-end encryption and offers optional cross-device syncing via a Proton account, with offline access and biometric unlock. The app focuses on privacy and security while providing quick search, icons, and immediate visibility of the next code to streamline 2FA usage.
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Excerpts where Proton Authenticator appeared in the AI's answer
Proton Authenticator - How it works: Can be used completely anonymously as a local app, or you can link it to a Proton account
Proton Authenticator — closest match to what you asked for. It supports encrypted backups/sync, works across platforms, and can be used without a phone number or even an account.
