Kotlin Multiplatform Roadmap

What KMP is, when to use it, and a guided setup with the K2 compiler.

4 days

• play_circleWhat is Kotlin Multiplatform? (when to choose it)
• play_circleCreate a KMP Project: Gradle plugin, K2 compiler, targets
• articleAndroid Studio/IntelliJ tips (wizard, run configs, Swift basics in IDE)
• assignmentPractice: Generate a starter shared module and run Android + iOS

Organize common and platform code using the modern hierarchy.

4 days

• play_circlecommonMain, androidMain, iosMain - how the pieces fit
• play_circleDependencies & resources across source sets
• articleBuild logic & Gradle basics for multiplatform
• assignmentPractice: Move platform calls behind interfaces in commonMain

Design platform bridges you can unit-test from common code.

4 days

• play_circleexpect/actual 101: signatures, packaging, and naming
• play_circleDesigning platform services (time, network reachability, logging)
• articlePitfalls: leakage of platform types into common code
• assignmentPractice: Implement a Reachability service with expect/actual

Modern memory manager, threads, and coroutine notes on iOS/Native.

3 days

• play_circleModern memory manager & shared heap (no freezing model)
• play_circleCoroutines on Native: dispatchers & main-safety on iOS
• assignmentPractice: Concurrent tasks + safe cleanup on iOS

Ktor HTTP client + kotlinx.serialization across platforms.

1 week

• play_circleKtor Client setup for Android & iOS (engines, timeouts)
• play_circlekotlinx.serialization: JSON config, polymorphism, defaults
• articleError mapping & retries (HTTP → domain)
• assignmentPractice: Shared API client + model serialization

Key–value, files, and SQL options; cache & invalidation patterns.

4 days

• play_circleKey–value & files (multiplatform-friendly approaches)
• play_circleSQL options in KMP (overview) and repository patterns
• articleCache policies: stale-while-revalidate, TTL, manual invalidation
• assignmentPractice: Offline-first cache backed by shared storage

Interface-driven design, constructor injection, module boundaries.

3 days

• play_circleModule boundaries & feature splits in KMP
• play_circleDI without frameworks (constructor injection, factories, service locators)
• assignmentPractice: Wire a shared use-case layer for Android & iOS

Share UI with Compose where it fits; interop with native UIs.

1 week

• play_circleCompose Multiplatform basics (Android/iOS/Desktop/Web preview)
• play_circleState, navigation, and platform interop (UIKit/SwiftUI bridge, Views)
• articleResources & theming notes
• assignmentPractice: Shared screen rendered on Android & iOS

CocoaPods & Swift Package export; XCFrameworks; interop tips.

4 days

• play_circleCocoaPods Gradle plugin (Pods as deps / publish as Pod)
• play_circleSwift Package export (SPM) from Gradle
• articleXCFrameworks, Swift/Obj-C interop, and versioning
• assignmentPractice: Integrate the shared library into a Swift app

commonTest, iosTest, and CI pipelines for multi-target builds.

4 days

• play_circlekotlin.test in common & platform tests; mocking strategies
• play_circleRunning iOS tests from Android Studio; device/simulator tips
• articleCI setup: Gradle tasks, caching, matrix builds (Android+iOS)
• assignmentPractice: Add tests & a basic CI workflow to the repo

Packaging, version catalogs, and platform caveats (JS/Wasm).

3 days

• play_circlePublishing libraries (Maven, framework artifacts)
• play_circleVersion catalogs & dependency management for KMP
• articleJS & Wasm notes (status, when to target them)

Put it all together: one shared module powering two apps.

1 week

• play_circleDesign: shared data layer + expect/actual platform services
• play_circleImplement & wire Android + iOS (UI of your choice)
• assignmentPractice: Ship a minimal feature end-to-end (API, cache, tests, CI)