Authenticator helps protect your online accounts by adding an extra step during sign-in using two-factor authentication (2FA). The app generates time-based one-time passwords (OTP) that refresh automatically and work without an internet connection.
It supports services that use 2-step verification and helps reduce unauthorized access by requiring a changing code during login.
Key Features:
• Generate time-based OTP codes • Works offline after setup • Quick setup using QR code scanning • Simple and easy-to-use interface • Manage multiple accounts in one place • Codes are generated directly on your device
How it works:
After enabling two-factor authentication on a supported service, scan the provided QR code with Authenticator. The app will then generate login codes that update every few seconds. Disclaimer: This app is not associated with any official service provider. All trademarks belong to their respective owners.
Updated on
Feb 5, 2026
Tools
Data safety
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