Since a lot of you asked me to build an Android version and post about it here when I launch, and I sincerely apologise that I forgot to post on lemmy sooner. The free app was launched on Play store almost a month ago and has garnered some excellent reviews.
It has feature parity with the iPhone App and works on all Android 8.0+ devices.
Since your app is open source, I think it would make great sense to either submit it to the F-Droid repo, create your own repo that people can add to their F-Droid client, or host the project in one of the places that are already supported as a source in the Obtainium app.