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4OTP review

Freemium#71 of 111 in Authenticator Apps

A focused authenticator with encrypted local storage, backups, and paid multi-device sync.

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

4OTP is a TOTP two-factor authentication app for individuals managing verification codes across multiple devices. It generates six-digit codes that change every 30 seconds, stores 2FA data in encrypted local storage, and works offline without an account. Apps are available for Windows, macOS, iOS, and Android. Code search, renaming, pinning, automatic icons, and biometric or password access add practical organization and access controls for personal authenticator use.

The free apps cover the core workflow: TOTP code generation, encrypted local storage, encrypted backups, offline use, and code restoration. They also support importing codes from Google Authenticator and exporting them to Google Authenticator or compatible apps. This makes 4OTP suitable for users who want local protection and backup options without paying for a synchronization service. The free offering is a focused choice for one device or manually managed multi-device use.

4OTP Sync adds encrypted synchronization across supported devices for US$36 per year, with synchronization history, restoration to earlier states, encrypted backups, and support for up to 50 devices. That history and state-reversal capability gives the paid tier a clearer role than simple code sharing, particularly for users who maintain several devices. Choose 4OTP if encrypted local storage and optional cross-device history match your needs; choose another authenticator if open-source software is required or if paid synchronization is not acceptable.

4OTP pros and cons

  • Where it wins
    • Encrypted local storage and backups support offline code access
    • Imports and exports codes with Google Authenticator compatibility
    • Sync covers Windows, macOS, iOS, Android and up to 50 devices
  • Where it doesn't
    • Cross-device synchronization requires the paid Sync plan
    • The free apps do not include synchronization history or state reversal
    • 4OTP is not open source

4OTP fact sheet, pricing and score →

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