Took Beeware for a spin yesterday. It's just the Toga web view tutorial from the documentation page, but serving my FreedomBox web interface.
Screenshot: https://njoseph.me/bepasty/F6DGm3vq
There's not much to see in terms of code. I am just amazed that it works on GTK and Android. I had to put a lot of work into resizing PNGs because the platforms expect different resolutions.
https://salsa.debian.org/njoseph/freedombox-beeware
I don't know yet if the native Android app's features can be fully replicated.