I feel like there's maybe a handful of these "what if github was an app store" type apps. Personally I don't see the appeal. F-Droid is the best way to get apps imo, and if it's not in F-Droid it's probably on IzzyOnDroid, and if it's in neither of those they're publishing releases on their git repo and you can just use Obtainium for those. These "github store" type apps just seem to try to be "Obtainium but easier" but at the cost of centering github as "the store" which considering how hostile github is is not the best idea

But I never saw the appeal of avoiding f-droid just to "cut out the middleman" because then you lose the third-party verification that the apk actually corresponds to the source code and you can meaningfully exercise your four freedoms.