iPhone Screenshots


Authenticator is a simple, free, and open source two-factor authentication app. It helps keep your online accounts secure by generating unique one-time passwords, which you use in combination with your other passwords to log into supporting websites. The simple combination of the password in your head and the rotating passwords generated by the app make it much harder for anyone but you to access your accounts.

• Easy: Simple setup via QR code, "otpauth://" URL, or manual entry
• Secure: All data is stored in encrypted form on the iOS keychain
• Compatible: Full support for time-based and counter-based one-time passwords as standardized in RFC 4226 and 6238
• Off the Grid: The app never connects to the internet, and your secret keys never leave your device.

What's New

Version 2.0.2

• Improved the accessibility of manual token entry when using VoiceOver
• Improved app efficiency, reducing energy usage and processor load by over 95%

Ratings and Reviews

4.4 out of 5

49 Ratings

49 Ratings

So much better than google auth


Just make sure your device backups are encrypted, and your codes should transfer when switching. Keep in mind with google auth, if you don’t turn off 2 factor for every account you have, you will likely be locked out of your accounts after changing devices.

Too east to delete a token - then you’re screwed


Was working with Dashlane then there was a problem with authenticator app. You see in one small second my finger hit the delete button on the token. Now I can’t log in to anything. Crazy thing is I’m trying to get support and it does not recognize my email. Stay away from this app until it’s better designed or you’ll be spending hours trying to get into your account on another app. There’s no way it should be this easy to accidentally delete a token and then screw your life for good. Really a bad design

Super easy!!! F Google's version


I was originally using Google Authenticator. Needless to say I wasted two days trying to authenticate a very important account. I thought that it was my account, but it was actually Google Authenticator that was garbage. I downloaded this app and it worked instantly without any issues at all! Five stars all the way!


Matt Rubin
18.7 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2013-2017 Matt Rubin


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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