Google Authenticator

What Google Authenticator does

Google Authenticator generates temporary verification codes for accounts protected by two-step authentication. It is suited to people who want a separate code generator rather than relying only on text messages or email. Codes can be created without a mobile or Wi-Fi connection, which makes the app useful when travelling or in places with limited connectivity.

Setup and everyday use

Accounts can be added by scanning a QR code with the phone camera, reducing the need to type long setup keys manually. The app supports time-based and counter-based one-time passwords, covering common two-factor authentication arrangements. Once an account is added, its current code is available from a straightforward list, with a countdown indicating when the code will change.

Moving between devices

Google Authenticator includes tools for transferring account entries to another device through QR codes. It can also sync codes with a Google Account, giving users a recovery option if a phone is lost or replaced. These options are most relevant to people managing several protected accounts and wanting to avoid setting up every service again from the beginning.

Listing details

• Package: com.google.android.apps.authenticator2
• Developer: Google LLC
• Category: Tools
• Rating: 3.8537269 from 640,343 ratings
• Installs: 100,000,000+

Its large install range reflects broad adoption, while the rating figure gives a more measured view of user feedback. The package identifier is the clearest way to distinguish this app from similarly named authentication tools.