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kotlinlang

is there a way to do partially native ui and partially compose on ios or do you have to choose one or the other?

Very much possible to do use both if needed.....for particular screens or even just part of a screen.

Small example in <https://github.com/joreilly/PeopleInSpace> of using Compose for part of SwiftUI screen

Also <https://github.com/joreilly/FantasyPremierLeague> where one particular CMP screen is used in the iOS client

One other aspect of that PeopleInSpace example is that not only is Compose UI used within a SwiftUI view....but another SwiftUI view is also included in that Compose view.  A little bit contrived in this case but there just to give example of that scenario.

That's one of the main strengths of KMP, that it's not a framework, that it's a toolset/”library" instead, allowing you to mix and match native code and shared code any which way you want or need.