2FAS Auth review
A free, migration-friendly authenticator with encrypted backups and broad browser coverage.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
2FAS Auth is a free authenticator for iOS and Android, designed for people who need one-time verification codes without a paid subscription. It generates TOTP and HOTP codes offline and supports QR-code, image, and manual token setup. Token groups, search, customization, trash, and restore controls help organize larger collections. PIN and biometric protection add local access controls, while the app's open-source status may appeal to users who prefer a more transparent software model.
The Free plan includes encrypted cloud and manual backups, with iCloud support on Apple devices and Google Drive support on Android. Cross-device token synchronization is available within the same operating system, which makes migration and continuity more practical when devices stay inside one platform family. Import support covers Google Authenticator, Aegis, Raivo OTP, LastPass, Authenticator Pro, and andOTP. Users moving from one of these apps get a clearer transition path than those starting with manual re-entry.
Browser access is a notable part of the product. The browser extension supports Chrome, Brave, Firefox, Edge, Opera, and Safari, allowing tokens to be transferred to supported desktop browsers. That makes 2FAS Auth a strong fit for individual users who want free code generation, backup options, and browser convenience. It is less suitable for teams seeking administration features or for users who need synchronization across different operating systems. The product is also separate from the vendor's 2FAS Pass password manager, so it should be evaluated specifically as an authenticator rather than as a broader credential-management suite.
2FAS Auth pros and cons
- Where it wins
- Generates offline TOTP and HOTP codes
- Encrypted iCloud and Google Drive backups
- Imports tokens from several popular authenticator apps
- Where it doesn't
- Cross-device synchronization stays within the same operating system
- Browser access depends on supported browser extensions
- Available platforms are iOS, Android, and a browser extension
2FAS Auth fact sheet, pricing and score →
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