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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).

🛡

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.