Protect any account, anywhere — Zunoy Authenticator is the fast, privacy-first 2FA app with offline code generation and zero-knowledge encrypted cloud backup.
Works with Google, Instagram, Facebook, Twitter, GitHub, Dropbox, and thousands of other apps and services that support two-factor authentication. Stop account takeovers and password leaks. Zunoy Authenticator adds an essential second layer of verification to every sign-in, generating secure Time-Based One-Time Passwords (TOTP) directly on your device — no server, no exposure.
**Why Choose Zunoy Authenticator?**
**No Sign-Up Required** — Download and generate codes instantly. No email or phone number needed.
**100% Offline Generation** — Generate 6-digit 2FA codes anywhere, without Wi-Fi or cellular data.
**Zero-Knowledge Cloud Backup** — Never get locked out. Back up and sync across devices using a personal encryption key only you control.
**Biometric App Lock** — Secure the app with Fingerprint or Face unlock.
**Screenshot Protection** — Prevent sensitive codes from being captured or saved to your gallery.
**Import & Export Freely** — Migrate from Google Authenticator or export your vault as a secure file anytime.
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One authenticator for every account you own. Zunoy is built on a local-first, zero-knowledge architecture — your secrets never leave your device unencrypted, and we never track or monetize your data.
Download Zunoy Authenticator and secure every account, not just one.
Secure, offline 2FA authenticator with zero-knowledge encrypted cloud backup.