Kotlin Multiplatform

This is for building cross-platform Kotlin apps that share business logic (and optionally UI) across Android, iOS, desktop, and web. You get expect/actual for platform-specific bits, Ktor for networking, SQLDelight for local storage, and Compose Multiplatform if you want shared UI. The approach is pragmatic: share what makes sense (repositories, models, API calls) and go native where it matters. It's less magic than Flutter, more type-safe than React Native, and lets you write Kotlin everywhere. Best for teams already invested in Kotlin or building apps where business logic complexity justifies the shared code overhead.

skills.sh installs: 180
GitHub stars: 108
last updated: Aug 21, 2026

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Install

$ npx -y skills add travisjneuman/.claude --skill kotlin-multiplatform --agent claude-code

Installs into .claude/skills of the current project.

Files

Kotlin Multiplatform Skill

Shared business logic and optional shared UI across Android, iOS, desktop, and web.

Project Structure

project/
├── composeApp/                    # Shared Compose UI (if using CMP)
│   └── src/
│       ├── commonMain/            # Shared UI code
│       ├── androidMain/           # Android-specific UI
│       ├── iosMain/               # iOS-specific UI
│       └── desktopMain/          # Desktop-specific UI
├── shared/                        # Shared business logic (KMP)
│   └── src/
│       ├── commonMain/            # Shared code
│       │   └── kotlin/
│       │       ├── data/          # Repositories, data sources
│       │       ├── domain/        # Use cases, models
│       │       └── platform/      # expect declarations
│       ├── androidMain/           # actual implementations
│       ├── iosMain/               # actual implementations
│       └── commonTest/            # Shared tests
├── androidApp/                    # Android entry point
├── iosApp/                        # iOS entry point (Xcode project)
├── build.gradle.kts
└── settings.gradle.kts