Authenticator is a lightweight, open-source TOTP (Time-based One-Time Password) generator for Android. Keep your online accounts secure by generating unique authentication codes directly on your phone. No cloud sync, no data collection — your security keys stay with you. Compatible with all major platforms: Google, GitHub, Facebook, Microsoft, and thousands of other services.
The tools that make Authenticator work the way you do — no add-ons, no surprises.
Quickly add accounts by scanning QR codes. Works with all standard TOTP providers.
Generates 6–8 digit codes that refresh every 30 seconds. Perfectly synced with TOTP standards.
All authentication keys stored locally on your device. No internet required, zero cloud dependence.
Beautiful Material Design UI with native dark mode support. Easy on your eyes, day and night.
Manually input secret keys if QR scanning isn't available. Full flexibility for every scenario.
Export encrypted backups and import them on other devices. Your account, your control.
Why teams are making the switch.
| Feature | Authenticator | Google Authenticator |
|---|---|---|
| Cloud sync | Manual export only | Google Account |
| Backup options | Local encrypted export | Google Account only |
| Data privacy | 100% local, no tracking | Synced to Google |
| Multiple devices | Manual import | Auto-sync via Google |
| Open source | Yes | No |
| Price | Free | Free |
Completely free, no ads, no in-app purchases. Privacy is not a paid feature.
What teams ask before adopting Authenticator.
Yes. Both use the same TOTP standard (RFC 6238), so codes from Authenticator work with any service that supports Google Authenticator. You set up accounts by scanning the same QR codes.
Yes. TOTP codes are generated on-device from the shared secret and the current time, so Authenticator produces valid codes without an internet connection.
Yes. Authenticator is a free TOTP 2FA app for Android, distributed as an APK.
Re-scan the QR codes (or enter the secret keys) for each account in Authenticator, confirm the codes work, then remove them from your old app.
Have questions or need something tailored to your business? We'd love to help you get started.
