Transcript
A wafrn woot (post) by @[email protected] saying "Microsoft Authenticator needs me to validate with Authenticator in order to log in with Authenticator to use it to authenticate another app with Authenticator. Here is the app telling me to open itself to validate itself with itself. #infosec #iHateComputers" It has a screenshot showing the microsoft authenticator app.
I use Aegis.
https://f-droid.org/packages/com.beemdevelopment.aegis
Enteauth is also pretty good