KMP vs CMP

πŸ› οΈ Kotlin Multiplatform (KMP) – The Brains Behind the Scenes

Think of Kotlin Multiplatform like a magic Lego set that lets you reuse the same blocks to build things for Android, iOS, desktop, web, and even servers.

  • You write shared code in Kotlin – especially the logic (like calculations, API calls, or data processing).
  • Then, you plug that code into different apps – one for Android, one for iOS, etc.
  • It’s mostly about code sharing, not UI.

Example:

If you’re building a weather app:

  • You can write the code that fetches weather data once with KMP.
  • Then use it on both Android and iOS, even though the screens might look different.

🎨 Compose Multiplatform – The Artist Drawing the Screens

Compose Multiplatform is like a magic crayon box that lets you draw your app’s screens once and show them on Android, desktop, web, etc.

  • It’s based on Jetpack Compose (Android’s modern UI toolkit).
  • But now you can use it to build user interfaces for other platforms too (like desktop apps with Compose for Desktop or web with Compose for Web).
  • It’s about UI sharing, and it often works well with Kotlin Multiplatform.

Example:

You can design one screen layout for your weather app:

  • And show that same screen on Android, Windows, macOS, and even the web.

🀝 TL;DR - How They Work Together

FeatureKotlin Multiplatform πŸ› οΈCompose Multiplatform 🎨
What it doesShares logic/codeShares UI/screens
FocusBackground stuff (API, data, logic)Frontend look & feel
PlatformsAndroid, iOS, web, server, desktopAndroid, Desktop, Web
Can they work together?βœ… Yes! Compose uses KMP for shared logicβœ… Yes! KMP can power Compose apps

🧩 Summary

  • πŸ› οΈ KMP = Share your app’s brains (logic, calculations).
  • 🎨 Compose MP = Share your app’s face (UI).
  • 🧠 + 🎨 = You get a smart and good-looking app that works on many platforms.