Still, for cross-platform mobile and desktop apps, the Dart website recommends Flutter with no qualifications, and Flutter only covers the approach of a single

Still, for cross-platform mobile and desktop apps, the Dart website recommends Flutter with no qualifications, and Flutter only covers the approach of a single cross-platform UI, as opposed to native UI with a cross-platform backend. The fact that Kotlin officially supports the second option makes it more appealing to me.