Kotlin by JetBrains

Three Android developers. No iOS experience. Two months to ship on both platforms.

Suhyeon “Leah” Kim shares a year of lessons at the Swift–Kotlin boundary: Firebase integration, StateFlow, binary isolation, and the SPM umbrella export used to resolve it.

Get up to speed: kotl.in/h9oqr3

📢 Kotlin 2.5.0-RC is out! Here are some of the highlights:

✅ Language: Stable name-based destructuring in only-syntax mode, unused return value checker, and improved compile-time constants
✅ Standard library: New experimental functions for simplifying common patterns with if expressions and experimental support for Unicode code points
✅ Kotlin/JVM: Support for Java 28
✅ Kotlin/Native: Swift export in Beta with a new DSL
✅ Kotlin Multiplatform: New publication format for multiplatform libraries
✅ Kotlin/JS: Support for the es2020 target
✅ Kotlin compiler: More consistent inline function behavior during klib compilation
Try it out: kotl.in/2-5-0-rc

Compose isn’t only for UIs. It can actually create music!

At KotlinConf’26, Merlin Pahic used Kotlin and Compose Multiplatform to create synths, drum machines, complex rhythms, and a livecoding environment inside IntelliJ IDEA.

See Compose in a different light:
kotl.in/9etykc

✨ Shared UIs are not a preview feature anymore.

Compose Multiplatform is Stable on Android, iOS, and desktop, with web in Beta.

There’s Hot Reload for instant updates, plus Junie – the JetBrains AI coding agent – to generate entire screens.

Ship stunning shared UIs faster 👇
kotl.in/i4m0yb

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