Google Authenticator

Two-step codes in one place

Google Authenticator generates temporary verification codes for accounts that use two-step authentication. It suits anyone who wants an extra check beyond a password, especially people managing several work, email, banking, or other online accounts. Codes can be viewed quickly from a simple account list and do not require a mobile or Wi-Fi connection once an account has been set up.

Simple account setup

For supported services, the camera can scan a QR code during setup instead of requiring a security key to be typed manually. The app supports both time-based and counter-based one-time passwords, which gives it coverage across common two-step verification systems as well as some older services.

Moving between phones

Authenticator can sync codes with a Google Account, helping preserve access if a phone is lost or replaced. It also includes QR-based transfer for moving an account collection to another device. These options are useful, but they make it worth checking which backup and transfer method fits the security settings of each account.

At a glance

• Developer: Google LLC
• Category: Tools
• Rating: 3.85 from more than 640,000 reviews
• Installs: 100,000,000+

This is a focused utility rather than a password manager or account recovery service. Its value comes from making verification codes available quickly and keeping the process familiar across many services.