Simple Authenticator generates TOTP codes on your device. Scan QR codes, import from Google Authenticator, lock with PIN or biometrics — optional encrypted cloud backup when you sign in.
Scan, generate, and secure TOTP/HOTP codes. Works fully offline — cloud backup is optional.
Time-based and counter-based 2FA codes with visual countdown. Tap a code to copy.
Scan otpauth QR codes, pick from gallery, or enter secrets manually.
Migrate accounts from Google Authenticator via export QR or file import.
Optional Google Sign-In. Backups are encrypted on-device with your sync passphrase before they leave the phone (AES-256-GCM).
Optional app lock with PIN, Face ID / fingerprint, and auto-lock timeout.
Export and import encrypted JSON backups with a separate file passphrase — no cloud required.
Clean cross-platform UI with Lucide icons and JetBrains Mono for codes — built for quick lookups when you need a 2FA code.
Codes generated locally
Optional cloud backup
Login optional
One app everywhere
Download Simple Authenticator free. Offline TOTP codes with optional encrypted cloud backup.