FRAMEWORK DECISION NOTE

Kotlin Multiplatform vs React Native

Kotlin Multiplatform and React Native approach shared mobile development from different ecosystems. KMP extends Kotlin into shared domain, data and optional UI code. React Native brings the React programming model to native mobile surfaces. Your existing team skills and native integration needs should drive the choice.

SIDE BY SIDE

The practical differences

Decision area	Kotlin Multiplatform	React Native
Shared code	Share business logic, data and optionally Compose UI	Share application logic and UI through React Native
Primary language	Kotlin	JavaScript or TypeScript, plus native languages when needed
UI approach	Compose Multiplatform or native UI, by feature	React components backed by native platform views and modules
Native integration	Direct Kotlin/JVM and Kotlin/Native interop	Native modules/components exposed through React Native APIs
Team fit	Kotlin, Android and JVM-oriented teams	React, web and JavaScript-oriented teams
Adoption path	Share a domain/data layer first, then expand	Embed React Native surfaces or begin with a React Native app

KMP MAY FIT BETTER

Keep Kotlin across mobile and backend-friendly layers

Your team has Kotlin, Android or JVM experience.
You want to begin by sharing domain and data code.
You prefer direct access to platform SDKs from shared/native code.
You may combine shared Compose with native UI by feature.

REACT NATIVE MAY FIT BETTER

Bring a React and TypeScript team to mobile

Your team is strongest in React, JavaScript and TypeScript.
You want a React component model across most of the mobile UI.
The React Native ecosystem supports your required integrations.
You value sharing concepts and talent with an existing web team.

IF YOU CHOOSE KMP

Start with conventions, not just dependencies

KMP SK packages the repetitive product foundation into one source project: clean KMP architecture, Compose UI patterns, auth, networking, offline data and quality checks. The goal is to make the first feature follow the same rules as the tenth.

For framework details, read the official Kotlin Multiplatform documentation and React Native architecture documentation. This comparison describes development models; it does not claim a universal performance winner.

READY WHEN YOU ARE

Chosen Kotlin Multiplatform? Begin with the product foundation assembled.

Get the full source once, then use it across your own and client projects.

See pricing

Also considering Dart? Read Kotlin Multiplatform vs Flutter.