Kotlin Multiplatform Development Services for iOS & Android

Share logic, keep native UX

Your Android and iOS teams build every feature twice and fix every bug in two places. With Kotlin Multiplatform development, both apps share core business logic while users keep a fully native UI.

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Kotlin Multiplatform Development Services for iOS & AndroidKotlin Multiplatform Development Services for iOS & Android
Warner Recorded Music
Eko-Okna
Dolby
YouMap
Eatu0026amp;Joy

15

years of building mobile platforms

<0,03 %

crash rate of Play's app over 10+ years

100+

builds a day in our CI/CD pipelines

What KMP app development gives you

01

Write business logic once 

Shared Kotlin code covers networking, data models, validation logic and business rules for both platforms. You build and test the logic of each new feature once, in a shared module. A fix there lands in both apps' next release.

02

Keep native performance and UX

KMP compiles shared code into fully native code, with no JavaScript bridge in between. Each app still calls its platform's native APIs directly. Performance and UX match what users expect from their platform.

03

Adopt KMP without a rewrite 

Kotlin Multiplatform app development supports incremental adoption, starting with a single module inside your existing native apps. You move shared logic step by step while both apps stay in production. Risk stays low, and releases go out on schedule.

04

Get consistent behavior everywhere

Pricing rules, validation and data handling behave the same on both mobile operating systems. Users get the same result on either device, and your analytics compare like with like.

05

Scale one Kotlin team

Google has supported Kotlin for Android development since 2017, so your Android developers most likely know it already. iOS engineers continue to build the user interface in Swift. You grow one team around shared Kotlin code.

06

Reach desktop and web too 

The same shared Kotlin code can also power desktop apps and web clients when your roadmap needs them. Compose Multiplatform lets you share UI across Android, iOS and desktop where it fits. Its iOS support has been stable since 2025.

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How Kotlin Multiplatform works

A KMP project splits your app into one shared layer and two native layers. You decide how much code sharing makes sense for each feature.

One shared module for core logic

Business rules, networking and data handling live in one shared Kotlin module. Your Android and iOS apps call it like any other native library.

Platform APIs through expect/actual

When shared code needs a platform API, the expect/actual mechanism declares it once. Each platform then supplies its own native implementation. Platform-specific code stays in the platform layer.

Your tools stay the same

Android developers work in Android Studio and iOS engineers in Xcode, as before. Our CI/CD pipelines test shared code on every supported platform before release.

Kotlin Multiplatform development, end to end

Code sharing pays off when you plan the architecture around it. We take ownership from the first module to production releases.

<strong>KMP consulting and architecture audit</strong> 

KMP consulting and architecture audit 

We assess your codebase and map which modules to share first and which stay platform-specific. You get a migration plan with priorities, risks and effort for each module.

<strong><strong>New KMP app development</strong> </strong>

New KMP app development 

We build Android and iOS apps on a shared Kotlin core from day one. Native UI on both platforms keeps the experience each user expects.

<strong>Native-to-KMP migration</strong> 

Native-to-KMP migration 

We move business logic from your existing native apps into shared modules, one feature at a time. Your apps stay live through the whole migration.

<strong>Compose Multiplatform UI</strong> 

Compose Multiplatform UI 

Where a shared UI makes sense, we use Compose Multiplatform to share screens too. We decide screen by screen and keep native UX where it matters most.

<strong>CI/CD and release governance</strong> 

CI/CD and release governance 

Our CI/CD pipelines run 100+ builds a day. Shared code reaches both stores through one tested release process.

<strong>KMP consulting and architecture audit</strong> 

KMP consulting and architecture audit 

We assess your codebase and map which modules to share first and which stay platform-specific. You get a migration plan with priorities, risks and effort for each module.

<strong><strong>New KMP app development</strong> </strong>

New KMP app development 

We build Android and iOS apps on a shared Kotlin core from day one. Native UI on both platforms keeps the experience each user expects.

<strong>Native-to-KMP migration</strong> 

Native-to-KMP migration 

We move business logic from your existing native apps into shared modules, one feature at a time. Your apps stay live through the whole migration.

<strong>Compose Multiplatform UI</strong> 

Compose Multiplatform UI 

Where a shared UI makes sense, we use Compose Multiplatform to share screens too. We decide screen by screen and keep native UX where it matters most.

<strong>CI/CD and release governance</strong> 

CI/CD and release governance 

Our CI/CD pipelines run 100+ builds a day. Shared code reaches both stores through one tested release process.

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Available for projects

Start with one shared module

Tell us which apps you run and what slows your releases. We'll show you where to start with Kotlin Multiplatform app development.

Frequently Asked Questions

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Do we have to rewrite our existing app to adopt KMP, or can we integrate it gradually?

You can integrate it gradually. KMP plugs into existing native apps as a native library, so you can start with one module, such as networking or data. The rest of each app keeps running as before.

What if our iOS team isn't familiar with Kotlin? 

They don't need to switch languages. iOS engineers keep building the UI in Swift and use the shared code as a native library. Kotlin syntax is close to Swift, so reading and reviewing shared code comes quickly.

Will we lose native performance or native UX by using KMP? 

In practice, no. On Android, shared code is standard Kotlin, the platform's own language. On iOS, it compiles to native machine code, with no runtime bridge, and performs on par with Swift for typical business logic. The UI stays native unless you choose Compose Multiplatform for selected screens.

How much of the codebase can realistically be shared between iOS and Android? 

It depends on how much of your app sits below the UI. Networking, data models, validation logic and business rules are typical candidates for code reuse, while UI code usually stays per platform. We estimate the share module by module during the architecture audit.

How secure is KMP for enterprise, fintech and healthcare applications?

Security-critical logic, such as token handling and validation, lives in one shared implementation, while encryption and key storage use each platform's native security APIs. We build for regulated sectors, including healthcare for Diagnostyka, in line with GDPR.

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