Recently it’s been Obtanium, basically it allows you to add apps which are hosted on GitHub/other app sources which don’t have auto updating, and have them automatically check and offer to update!
It’s been really useful for Lemmy clients (liftoff/Jerboa)/any android apps from:
GitHub GitLab Codeberg F-Droid IzzyOnDroid Mullvad Signal SourceForge SourceHut APKMirror (Track-Only) APKPure Third Party F-Droid Repos Jenkins Jobs Steam Telegram App VLC Neutron Code “HTML” (Fallback)
@Uranium_Green @Drhype #Obtanium is one of the best options out there imo. Updates come directly from the source.