Kotlin Multiplatform
VerifiedJetBrains technology for sharing Kotlin code and UI across Android, iOS, desktop and web
- Deployment Any
- Starting price Free
- Free trial Not offered
- Best for Startups, SMEs, Agencies
What is Kotlin Multiplatform?
Kotlin Multiplatform (KMP) is a technology from JetBrains that lets developers share code across Android, iOS, desktop, web, and server targets while keeping native performance and platform-specific flexibility. Developers write common business logic, data models, and utilities once in a shared module, then use the expect/actual mechanism to implement platform-specific pieces. With Compose Multiplatform, teams can additionally share UI code across Android, iOS, and desktop, or keep fully native UIs with SwiftUI and Jetpack Compose while sharing only the underlying logic.
KMP is free and open source under the Apache 2.0 license, with smart IDE support built into IntelliJ IDEA and Android Studio, including cross-language navigation and debugging between Kotlin and Swift. It is production-ready and used by companies including Google, Netflix, Duolingo, Forbes, and McDonald's. Teams can adopt it incrementally, starting with a single shared module before expanding to more of the codebase.
Key Features of Kotlin Multiplatform
Kotlin Multiplatform lists 9 documented features, including Shared commonMain code across Android, iOS, desktop, web and server, expect/actual mechanism for platform-specific implementations and Compose Multiplatform for shared UI. The list below covers what the product does rather than how it is marketed.
- Shared commonMain code across Android, iOS, desktop, web and server
- expect/actual mechanism for platform-specific implementations
- Compose Multiplatform for shared UI
- Native compilation with no VM or bridge overhead
- Direct native API access without wrappers
- Smart IDE support in IntelliJ IDEA and Android Studio
- Incremental adoption path
- Kotlin Multiplatform Wizard for project scaffolding
- Official Google support for Android/iOS business logic sharing
Kotlin Multiplatform Pricing
Kotlin Multiplatform lists 2 plans without published figures. Pricing is quoted on request.
Open Source
Free
Unlimited
Kotlin Multiplatform itself is free and open source under Apache 2.0, with no paid tiers for the technology.
JetBrains IDE tooling
Free / Custom
N/A
IntelliJ IDEA Community Edition and Android Studio (both free) fully support KMP; JetBrains’ paid IDEs and AI features like AI Assistant or Junie are optional separate products, not required to use KMP.
Kotlin Multiplatform Specifications
Kotlin Multiplatform is available on Windows, macOS and web app and has iOS and Android apps. It offers an API and has a free plan.
- any
- windows
- macos
- web app
- ios
- android
- startups
- smes
- agencies
- enterprises
- tickets
- training
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