AndOTP is not maintained since a while - https://forum.xda-developers.com/t/unmaintained-app-4-4-open-source-andotp-open-source-two-factor-authentication-for-android.3636993/page-6#post-87021655. It is nice indeed, but since it's about security I'd prefer something active to increase the probability to have all the fixes in time.

patrick1

bitwarden also doubles as TOTP authenticator

03365d6a53

 if you're looking for an open source authenticator app.

It works basically the same (or better) than the Google Authenticator, and you don't need the Google Store to get it.

bitcoin

How easy is a SIM swap hack and how does one guard against it?

cryptocoin

I can recommend [Aegis](https://getaegis.app/) if you're looking for an open source authenticator app.

It works basically the same (or better) than the Google Authenticator, and you don't need the Google Store to get it.