I've made apps with Xamarin before. For UI it's basically a very thin wrapper around existing UI code (at least pre-Xamarin Forms). I basically could take my ex

I've made apps with Xamarin before. For UI it's basically a very thin wrapper around existing UI code (at least pre-Xamarin Forms). I basically could take my existing native iOS knowledge, look up what they changed the function or object name to in Xamarin (usually a minor name change to be more idiomatic to C#), and set things up almost exactly the way I would have done in Objective-C code. It was actually very common that if I didn't know how to do something I'd look it up for iOS on Stack Overflow, because it was almost certainly answered there, then look up the corresponding Xamarin object/function names.