One more step to unhitching from Google…
Right now the only option I see in F-Droid is Aegis.
I’m not sure what to actually look for side from checking for unexpected permissions and reasonably frequent updates.
Hopefully something I can sync with a GNOME app…
Bitwarden Authenticator because Bitwarden seems to have a good reputation. I don’t use their password manager, though.
It does seem faintly insecure that it displays all of the codes at once on one page, but I’m having trouble imagining a scenario where it’s actually a problem.