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Mobile app · Security & privacy

Clockwork: 2FA Authenticator

Offline 2FA authenticator: TOTP codes, no network permission, no accounts.

  • Completely free
  • Android
  • Open source

Overview

Clockwork: 2FA Authenticator is a two-factor authentication mobile app, available on Android.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Offline 2FA authenticator: TOTP codes, no network permission, no accounts.” — F-Droid, 10 November 2026
  • “Offline 2FA authenticator: TOTP codes, no network permission, no accounts.” — F-Droid, 10 November 2026
  • “Switch the vault on and they stay here, encrypted with your passphrase: AES-256-GCM, key derived by PBKDF2-SHA-256 with 600,000 iterations.” — F-Droid, 10 November 2026

At a glance

Clockwork: 2FA Authenticator is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

  • Open source code
  • No advertising
  • Commercial use allowed

Sources and checks

  • Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) —
  • Last technical check: 6 November 2026
  • Description from F-Droid — F-Droid (citation courte)

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