Mobile authenticator apps provide a more secure way to log in to websites and online accounts using multi-factor authentication. Stay safe with the top MFA apps we've tested.

For most people, authenticator apps offer the best mix of convenience and security. But which one is best for you?

Best By Benedict Collins Contributions from Bryan M Wolfe last updated July 31, 2025 Add an extra layer of online security with the best authenticator app ...

Two-factor authentication is critical to securing your online accounts, and Duo Mobile offers the best combination of security, accessibility, and ease of use.

Mobile authenticator apps provide a more secure way to log in to websites and online accounts using multi-factor authentication. Stay safe with the top MFA apps we've tested.