Read between the lines above: if the .apk files were served in the releases/ resp. tags/ tree and are properly tagged for all versions, I have a script that runs automatically in regular intervalls to check for and download updates. For those apps, it works pretty well. Some other apps must be checked manually, which I don't do on a regular base (but those are few).
I have several packages from IzzyOnDroid https://apt.izzysoft.de/fdroid/repo?fingerprint=3bf0d6abfeae2f401707b6d966be743bf0eee49c2561b9ba39073711f628937a
I already love it
Beautiful website, thank you for sharing
Thanks for sharing