Missing Important Features
The app works well enough without issues. However, it is missing critical features. It is lacking any kind of notification support. This means you have to unlock your phone and launch the app to get to your code. The app should put these codes on your lock screen as an option. The codes I use expire after 60 seconds so not a ton of risk, as they can also be swiped off the lock screen were it supported. There is also no support for the Apple Watch which would be super helpful.
Diadumenianus about
Google Authenticator, v3.0.0