You are correct, that part of my comment was more a feature Kotlin multiplatform which Compose is built on top of. When building with Compose it has been a really nice experience to just call out to Foundation APIs on iOS in the same way I can from Swift, which has been the most impressive part to me. In Compose for Desktop apps you use JNA for native access IIRC. Kotlin multiplatform itself can compile natively to macOS, Windows and Linux without JVM, but you'd be running in a separate process to your Compose app which is JVM based on desktop.
Apologies my original comment was unclear on that.
Apologies my original comment was unclear on that.