[kuschku]

> I'm trying to remember how Android works, but I seem to recall that you need to sign the packages differently on Play and Fdroid. So you literally can't redistribute the same Play package with Fdroid (someone correct me if I'm wrong). This means rebuilding... and hence rebranding.

You can distribute the same build on F-Droid and Play, and also signed with your own key, if you use proper reproducible builds

(And not the TextSecure variant of "let’s download this huge image and let it compile the app", because that opens you to evil compiler issues).