Mobile apps · Comparison
Kotlin Multiplatform vs Flutter
Both let one team cover Android and iOS. Kotlin Multiplatform shares code and keeps native interfaces optional; Flutter shares everything, interface included, in Dart.
2 options · 8 questions side by side · updated
| Compare | Kotlin Multiplatform | Flutter |
|---|---|---|
| Language | Kotlin | Dart |
| What is shared | Logic, and optionally the interface | Everything, interface included |
| Interface | Native (Compose, SwiftUI) or Compose Multiplatform | Flutter widgets drawn by its own engine |
| Adding to an existing app | Easy, one module at a time | Possible, but usually a rewrite |
| iOS developers | Use a Kotlin framework from Swift | Rarely need to touch Swift |
| Ecosystem | Growing, with Jetpack libraries joining | Large, on pub.dev |
| Best for | Android teams adding iOS | New apps with custom interfaces |
| Backed by | JetBrains, supported by Google |
How to choose between Kotlin Multiplatform and Flutter
- Pick Kotlin Multiplatform when an Android app or a Kotlin team already exists, or when native interfaces on each platform matter.
- Pick Flutter for a new app where one shared interface and a quick route to both stores matter most.
The options
- Kotlin MultiplatformJetBrains' technology for sharing Kotlin code between Android, iOS, desktop, web and servers, from just the business logic up to the whole interface.
- FlutterGoogle's toolkit for building apps for Android, iOS, the web and desktop from one codebase in the Dart language, drawing every pixel itself so the app looks the same everywhere.
More comparisons
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- Google Play vs the App StoreGetting an app onto phones means going through one store per platform. The fees are in the same range; the steps before the first release are not.
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- Next.js vs Vite vs Astro vs Create React AppFour ways to start a React-based website or app. They are not quite the same kind of tool: Next.js and Astro are frameworks, Vite is a build tool, and Create React App is a retired starter.
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