I don‘t think they „patched“ stuff. Without knowing much about it I‘d guess they just took the backend, put it behind an Apple API and then built a new app base

I don‘t think they „patched“ stuff. Without knowing much about it I‘d guess they just took the backend, put it behind an Apple API and then built a new app based on that. The frontend there is probably the easier part and likely the reason it‘s only available on iOS at this point.