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✦ On-device · Optional E2E backup

Your 2FA codes,
always offline-ready

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.

Built for 2FA,
not password storage

Scan, generate, and secure TOTP/HOTP codes. Works fully offline — cloud backup is optional.

TOTP & HOTP Codes

Time-based and counter-based 2FA codes with visual countdown. Tap a code to copy.

📷

QR Scan & Manual Entry

Scan otpauth QR codes, pick from gallery, or enter secrets manually.

Google Authenticator Import

Migrate accounts from Google Authenticator via export QR or file import.

Encrypted Cloud Backup

Optional Google Sign-In. Backups are encrypted on-device with your sync passphrase before they leave the phone (AES-256-GCM).

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PIN & Biometric Lock

Optional app lock with PIN, Face ID / fingerprint, and auto-lock timeout.

💾

Encrypted Export

Export and import encrypted JSON backups with a separate file passphrase — no cloud required.

Clean, focused, fast

Clean cross-platform UI with Lucide icons and JetBrains Mono for codes — built for quick lookups when you need a 2FA code.

QR scanner for otpauth and Google Authenticator migration codes
Live TOTP codes with countdown rings and tap-to-copy
Skip login to stay fully offline, or sign in for encrypted backup
Settings for PIN lock, biometrics, auto-lock, import & export

On-device

Codes generated locally

E2E

Optional cloud backup

Skip

Login optional

Cross-platform

One app everywhere

Ready to secure your 2FA?

Download Simple Authenticator free. Offline TOTP codes with optional encrypted cloud backup.