I've been literally thinking about all this for the past 2-3 days. The idea and hacking started as an alternative to the flatpak app store ("Software" in gnome) and it's only yesterday that I thought I could also do this for Android. What's great is that Obtainium is also on Flutter. I need a bit of time to jot down thoughts and see what's the best approach 

 I see! Fantastic that you're working on it. Please tag me once you publish your thoughts!  

 Will do!