If you want to use python, you could try Flet. I’ve been using it for some projects at work and it’s dead simple to create an acceptable UI and the docs are very easy to read through with frequent examples. In July they added support for Android and iOS via progressive web apps, I haven’t tried it out yet, but it seems interesting so I might start a project in it soon…
I’ve been having fun with it, if that’s worth anything!
Otherwise, depending on your phone I’d just do native code with Kotlin + jetpack compose for Android or Swift + swiftUI for Apple. I always greatly preferred android development in school but once jetpack compose and swiftUI came out I find them both to be about the same level of enjoyment.
All three of those options are all declarative (describe how you want it to look in code) and I find it much easier to deal with than iOS storyboards or Android xmls.
Tangentially related, but I’ve been feeling like perhaps we’ve been jumping the gun with Lemmy and Kbin…
Maybe it would have made more sense, at least from an interoperability statepoint, to make an activitypub User protocol that can be selfhosted easily. So instead of making a new account for each Lemmy or Kbin instance someone has, you can instead connect your activitypub account to it.
Additionally as I know hosting has been an increasing problem around here, perhaps it would have been better to make instances single focused message boards ( i.e. just political humor, just animemes, just 196 etc.) So that the instance host can more easily manage moderation and hosting costs without ballooning things they might not necessarily care about to also be hosted by them.
This is just idle musings though, I’m not sure of how the community would be receptive to such thoughts.