Authenticator App - 2FA

Authenticator App - 2FA is a secure, offline authenticator that generates one-time passwords (OTP) and verification codes for two-factor authentication (2FA) and multi-factor authentication (MFA). Protect your email, social media, banking, gaming, crypto and work accounts with an extra layer of security, with no sign-up and no cloud account.

Your secret keys stay on your phone, encrypted with the Android Keystore. The authenticator works without internet, so your 2FA codes are always ready when you sign in.

🔐 WHY CHOOSE THIS AUTHENTICATOR APP
• Free 2FA authenticator, no account or login needed
• Works offline: OTP codes are generated on your device
• Secret keys encrypted with the hardware-backed Android Keystore
• Clean, modern design with light and dark themes

📷 ADD 2FA ACCOUNTS IN SECONDS
• Built-in QR code scanner: scan the QR code a website shows when you turn on two-step verification
• Scan a QR code from an image in your gallery, no storage permission needed
• Enter the setup key manually, with advanced options
• Import accounts from another authenticator app with its export QR code
• Choose an icon or letter avatar for each account

⏱️ TOTP AND HOTP CODE GENERATOR
• Time-based one-time passwords (TOTP) and counter-based codes (HOTP)
• SHA-1, SHA-256 and SHA-512 algorithms
• 6 or 8 digit codes, refreshed every 30 or 60 seconds
• Countdown ring shows how long each code is valid
• Tap to copy a code, search accounts and drag to reorder

🛡️ PRIVACY AND SECURITY FIRST
• App lock with PIN or password, plus optional fingerprint or face unlock on supported phones
• Auto-lock: choose how fast the app locks again
• Recovery code if you forget your PIN
• Screenshot protection, on by default, hides codes from screenshots and recent apps
• Copied codes are marked sensitive and the clipboard is cleared automatically
• App data is excluded from Android cloud backup
• Unlock required before showing an account's QR code

🔑 PASSWORD GENERATOR AND PASSWORD VAULT
• Strong password generator from 8 to 64 characters with a strength meter
• Encrypted password vault for website logins and secure notes, stored only on your device

💾 ENCRYPTED BACKUP AND RESTORE
• Back up your 2FA accounts and vault to an encrypted file protected by your own password
• Save the backup anywhere with the Android file picker
• Restore on a new phone and merge or replace your accounts
• Backup and restore included for free, no upgrade needed

♻️ RECENTLY DELETED
• Deleted accounts go to Recently deleted first
• Restore with one tap or delete permanently
• Cleared automatically after 30 days

📘 2FA GUIDES AND HELP
• Step-by-step guides to turn on two-factor authentication on popular websites and apps
• How to use section with answers to common questions

✅ HOW TO USE THE AUTHENTICATOR
1. Turn on two-factor authentication (2FA) or two-step verification in the security settings of a website or app.
2. Scan the QR code with this authenticator app, or type in the setup key.
3. Enter the 6 or 8 digit verification code when you sign in.

ℹ️ GOOD TO KNOW
• The app is free and supported by ads. Ads are kept away from your codes and copy buttons.
• Internet is used only for ads and their settings, the consent form and a one-time install count. Code generation never needs it.
• There is no account, so we cannot reset your PIN or restore lost data for you. Save your recovery code and keep an encrypted backup.
• Anyone with your backup file and its password can read it, so keep both safe.

Keep your online accounts safe with a simple, private and secure 2FA authenticator. Download Authenticator App - 2FA and add your first account in seconds.

Questions or ideas? Contact us from the Help section in the app or by email.