Google Authenticator

Google Authenticator

Google LLC
  • Free Utility Apps
  • 2010-09-20
    Release date
  • iOS 13.0 or later.
  • FREE

Google Inc. created this application to eliminate the requirement of receiving text messages on their phones to authenticate with two-step verification. You might have experienced that two-step verification requires typing a random code received via text message upon logging into an account. With Google Authenticator, you can generate random codes as an alternative to acquiring them via text message.


  • Automatic setup via QR code
  • Support for multiple accounts
  • Support for time-based and counter-based code generation

Why do you need Google Authenticator?

Google Authenticator provides an additional layer of security through a code; of course, password protection remains in place. Double-checking your accounts is crucial to avoiding online scams. Although it does not provide 100% protection, you may stay at ease because the algorithm created within the app is complicated to hack.

How Does Google Authenticator Work without Connectivity?

Google Authenticator connects to accounts and phones without a phone number. While the algorithm is sophisticated to prevent hackers, it is also complex.

On the server side, the same code is generated as the one generated on the Google Authenticator app. The code is used to verify your identity when you log into an online account. It is then used to generate the next code on both sides. It syncs with your Google or Facebook account without real connectivity through the phone number.

Final thoughts

Google Authenticator is an app that lets you create and manage one-time passcodes that provide an extra layer of security on your mobile devices. You can generate these codes on multiple devices and gain access to 2-step verification services like Google account protection, email, and web-based services. The Google Authenticator app can also manage backups and security codes for online accounts.

Google Authenticator is the best way to use a second layer of security on your accounts. That is why Google is developing this app and making it available to the public. You can now eliminate the SMS-based two-step verification and replace it with a Google Authenticator code.

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