The toolchain enables teams to integrate existing Kotlin Multiplatform modules with a single Maven command before compiling them ahead of time into native binaries. Comparative tests running on an iOS simulator demonstrated that this pipeline required just 4 milliseconds of scroll work per frame, compared to 17 milliseconds for Compose Multiplatform. Beyond lighter execution loops, the solution resulted in smaller stripped binaries and quicker start times. However, an imperative Java baseline proved that declarative frameworks still inherently carry processing overhead from state diffing and recomposition.
Key points
The reimplemented UI layer allows developers to deploy standard Compose code while reduci…: The reimplemented UI layer allows developers to deploy standard Compose code while reducing CPU resource consumption.
Declarative architectures introduce unavoidable state-tracking and recomposition overhead…: Declarative architectures introduce unavoidable state-tracking and recomposition overhead when compared directly against traditional imperative Java builds.
Lower per-frame processor burdens translate into practical end-user benefits like improve…: Lower per-frame processor burdens translate into practical end-user benefits like improved battery endurance and reduced hardware heat generation.
Sources checked by our analysis pipeline: 1
If Codename One didn’t exist, Kotlin Multiplatform is probably the platform I’d choose. I prefer Java, but Kotlin is a good language, and KMP was one of the strongest platforms we measured against in the Flutter post this week. Its first take on UI leaned on heavyweight native widgets, the way React Native does. The team learned from that, and Compose Multiplatform today is a good product built by people who care about performance.
So this post isn’t about KMP being bad. KMP is good. This is also good, and in a few ways better. Your Compose code now builds as a Codename One app, so it reaches more targets and did less work per frame on our benchmark. You don’t have to pick one forever: the same commonMain
builds both ways.
What you keep
There’s no transpiler here. kotlinc compiles your Kotlin for the JVM with the Compose compiler plugin, exactly as it does today. The Compose runtime and kotlinx.coroutines
are the upstream jars. The UI layer (androidx.compose.ui
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