KMP SK is a production-ready Kotlin Multiplatform starter kit for developers who want to begin with product work—not weeks of auth, networking, persistence and build setup. It shares the code that benefits from sharing while leaving clear seams for platform-specific behavior.
Each part is designed to work with the others, so adding a screen does not mean inventing a new state, data or error pattern.
Presentation, domain, data and UI layers give every feature a predictable home. ViewModels, state and events, repositories, use cases and typed results are ready to extend.
Start with complete login, registration, reset, OTP and session flows instead of a blank screen. Fake auth supports local demos while provider wiring stays replaceable.
Ktor clients, token handling, retries and error mapping connect to repositories backed by local data and offline-first synchronization primitives.
Material 3 foundations, reusable components, dark mode, motion and 40+ sample screens help the first product screen look related to the fifteenth.
The checks teams usually postpone are already part of the project: formatting, static analysis, coverage, dependency guardrails, build configuration and release hardening.
Repository instructions tell coding agents where features belong, which patterns to follow and which checks prove a change works. The result is reviewable code, not a parallel architecture.
The kit uses Compose Multiplatform for a shared interface and expect/actual boundaries where Android and iOS genuinely differ. That keeps common product flows consistent without pretending permissions, maps and storage are identical on both platforms.
Start with the included screens and components, replace the data provider behind repository interfaces, then move platform-specific work behind the existing seams. You can examine the dedicated Compose UI kit and architecture guidebefore deciding whether the structure fits your app.
Get the full source once, then use it across your own and client projects.