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Kotlin Multiplatform

Verified Sep 2026

Share code across platforms

One Kotlin codebase for Android, iOS, desktop and server: native performance with JetBrains-grade tooling.

JetBrains' answer to sharing code across Android, iOS, desktop and server: Kotlin compiles to each platform with expect/actual for native bits. Since 2023's stable release and Compose Multiplatform for shared UI, adoption doubled year over year. The serious option for teams with native expertise that want to stop duplicating logic.

Who it's for

Kotlin teams sharing business logic across iOS and Android while keeping native UIs.

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Kotlin Multiplatform is written in

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Kotlin Multiplatform runs on