I tried Aegis but chose Authenticator Pro instead. Both are open-source, but Authenticator Pro supports WearOS while Aegis doesn’t.

I found this after trying to export my keys from Authy, turns out you can’t.

I escaped from Authy years ago… There used to be hacks you can do on desktop where you’d run some custom JS within the context of the browser plugin to export all the data. Not sure if that’s still possible today.