Rules cannot drift
Pricing, validation, and state transitions live in one place. A fix applies everywhere at once, rather than being ported and half-remembered three months later.
Kotlin Multiplatform development
Kotlin Multiplatform development: share the logic, keep the interface native.
One Kotlin module holds your domain models, business rules, networking, and local storage. Android and iOS each keep a genuinely native interface on top. You stop maintaining the same pricing rule in two languages, and your users never feel like they are using a port.
The actual argument
The bug you cannot afford is the one that exists on only one platform.
Cross-platform frameworks are usually sold on cost. That is the least interesting benefit. The real one is consistency: when a fare calculation, an order state machine, or a permission rule exists once instead of twice, it cannot silently disagree with itself between your Android and iOS users.
The interface stays native
Jetpack Compose on Android, SwiftUI on iOS. Platform conventions, gestures, accessibility, and performance are real rather than approximated by a rendering layer.
Incremental adoption
KMP does not demand a rewrite. A well-layered Android app can move its domain and data layers into a shared module while the existing interface keeps working.
No framework lock-in tax
Shared code is plain Kotlin. If a platform ever needs to diverge, it diverges at the interface layer without unpicking a proprietary runtime.
What we share, and what we do not
The split that keeps KMP projects healthy.
Sharing too much is how multiplatform projects turn brittle. The boundary matters more than the technology.
Shared
- Domain models and business rules
- Use cases and validation logic
- Networking and API contracts
- Local database and caching
- Repository and data-source layers
- Dependency injection wiring
Platform-specific
- All user interface code
- Navigation and lifecycle handling
- Permissions and system dialogs
- Camera, location, and sensors
- Push notification handling
- Secure credential storage
Why the line sits there
Business logic is where correctness lives and where duplication is genuinely dangerous. Interface and platform integration are where users notice compromise immediately. Sharing the first and never the second gives you consistency without the uncanny feel of a ported app.
Technology
The KMP stack we work in.
Kotlin Multiplatform
Jetpack Compose
Compose Multiplatform
Coroutines & Flow
Ktor Client
SQLDelight
Koin
kotlinx.serialization
kotlinx-datetime
Supabase
Firebase
SQLCipher
Proof
KMP products we have actually shipped.
This is not a first experiment with the technology. Both platforms below run shared Kotlin in production code.
Logistics platform
Read the Case Study
D. Delivery
Three apps from one shared Kotlin codebase: customer booking, rider job app, and admin control tower. Realtime dispatch, offline-first sync, video proof capture, and server-enforced cash reconciliation.
Field service
Watch Demo
ProFix
A Kotlin Multiplatform maintenance workflow bringing contractor assignment, proof of work, progress visibility, and manager approval into one mobile system.
All work
Browse all case studies
Full portfolio
Every case study and product demo in one place, across logistics, field service, education, events, and SaaS.
FAQ
Kotlin Multiplatform questions we get asked.
How is KMP different from Flutter or React Native?
Flutter and React Native share the user interface and render it themselves. Kotlin Multiplatform shares the logic — domain models, business rules, networking, local storage — while each platform keeps its own genuinely native interface. The result feels native because it is native, and the rules that matter cannot drift between your Android and iOS users.
Is Kotlin Multiplatform production ready?
Yes. KMP is stable and used in production by major engineering teams. We have shipped multi-app KMP platforms including a three-app logistics system with realtime dispatch, payments, and offline-first sync.
Can you migrate our existing Android app to KMP?
Usually yes, and incrementally rather than as a rewrite. A well-structured Android app already separates its domain and data layers; those move into a shared module first while the Android interface keeps working untouched, and an iOS interface is added afterwards.
When is KMP the wrong choice?
When you only need one platform and have no near-term plan for the second, KMP adds structure you are not yet using. It is also a poor fit for products that are mostly interface with very little business logic, since there is little worth sharing. In both cases we will tell you to build native for one platform instead.
Start the conversation
Considering Kotlin Multiplatform for your product?
Bring the product, the platforms you need, and the constraints. If KMP is the wrong tool for it, that is a useful answer to get early — and you will get it straight.