0Pricing
Kotlin Multiplatform Academy icon

Kotlin Multiplatform Academy

KOTLINMobileAndroidIos

Share Kotlin code across Android, iOS, and beyond with Kotlin Multiplatform. From expect/actual to Compose Multiplatform and shipping shared modules.

🤖 AI-Powered📚 30 courses👥 100,000+ learners⭐ 4.9 rating
Course Overview

Kotlin Multiplatform: Share Code Everywhere

Share Kotlin code across Android, iOS, and beyond with Kotlin Multiplatform. This track covers 30 progressive mini-courses from absolute beginner (A1) through advanced (B2), with short focused lessons and quick quizzes to lock in each concept.

What You Will Learn

Start with the KMP project structure, commonMain, and expect/actual declarations, then share business logic across platforms. Advance to coroutines and Flow, Ktor networking, kotlinx.serialization, SQLDelight, Koin, Compose Multiplatform UI, native iOS interop, testing, and publishing a KMP library. Every lesson is practical, with a 24/7 AI tutor available when you need help.

How It Works

Each course is broken into four focused, bite-sized lessons. Complete a few lessons a day and you will master the full track in weeks, not months.

Start Learning →

How You'll Learn

🎯
Interactive Lessons
Hands-on coding exercises with real-time feedback
🤖
AI Tutor
Get instant help from our AI when you're stuck
💻
Built-in Editor
Write and run code directly in your browser
🏆
Certificate
Earn a certificate when you complete the course
Curriculum

30 Courses

Every course in the Kotlin Multiplatform Academy learning path.

01

What Is Kotlin Multiplatform & Why It Wins

A14 lessons

Explain what KMP shares, what stays native, and when to reach for it on a real team.

02

Set Up Your First KMP Project

A14 lessons

Install the toolchain and generate a working shared-module project from the wizard.

03

Inside the KMP Project Structure

A14 lessonsPRO

Navigate Gradle modules and source sets so you always know where code belongs.

04

Write Your First Shared Function

A14 lessonsPRO

Author pure Kotlin in commonMain and call it from both Android and iOS.

05

Kotlin Standard Library Across Platforms

A14 lessonsPRO

Use the parts of the Kotlin stdlib that work identically on every target.

06

expect / actual: Bridge to Each Platform

A24 lessonsPRO

Declare a common API once and provide a real implementation per platform.

07

Model Your Domain with Shared Data Classes

A24 lessonsPRO

Design clean shared models and enums that both apps consume.

08

Share Real Business Logic

A24 lessonsPRO

Move calculations and rules into shared code so logic never drifts between apps.

09

Build Your First Reusable Shared Module

A24 lessonsPRO

Package shared logic into a clean module with a public API both apps use.

10

Run It on Android & iOS Devices

A24 lessonsPRO

Launch the shared-powered app on both platforms and debug the wiring.

11

Coroutines in Shared Code

B14 lessonsPRO

Run async work in commonMain and expose it cleanly to both platforms.

12

Reactive Streams with Kotlin Flow

B14 lessonsPRO

Model continuous data with Flow and consume it on each platform.

13

Networking with Ktor Client

B14 lessonsPRO

Make real HTTP requests from shared code using the multiplatform Ktor client.

14

JSON with kotlinx.serialization

B14 lessonsPRO

Map API JSON to Kotlin models and back with the multiplatform serializer.

15

The Repository Layer in Shared Code

B14 lessonsPRO

Combine networking and parsing into a clean repository the apps depend on.

16

Local Storage with SQLDelight

B14 lessonsPRO

Persist data in a type-safe SQLite database shared across platforms.

17

Key-Value Storage with Multiplatform Settings

B14 lessonsPRO

Store preferences and small values portably across Android and iOS.

18

Dependency Injection with Koin

B14 lessonsPRO

Wire repositories, clients and use cases together with shared Koin modules.

19

Shared ViewModels for Both Apps

B14 lessonsPRO

Build presentation logic once and drive both Compose and SwiftUI from it.

20

Error Handling Across Platforms

B14 lessonsPRO

Model failures in shared code and surface friendly messages on each app.

21

Compose Multiplatform: Shared UI

B24 lessonsPRO

Write one Compose UI that renders on Android, iOS and desktop.

22

Navigation & Resources in Compose MP

B24 lessonsPRO

Add multi-screen navigation and shared images, fonts and strings.

23

Call Shared Code from Swift Like a Pro

B24 lessonsPRO

Master the Kotlin-to-Swift bridge so iOS devs enjoy your API.

24

Interop with Native iOS Frameworks

B24 lessonsPRO

Call Apple APIs and your own native code directly from Kotlin/Native.

25

Platform-Specific APIs Done Right

B24 lessonsPRO

Access device capabilities per platform behind one clean shared interface.

26

Concurrency & Threading Models

B24 lessonsPRO

Reason about Kotlin/Native memory and threading to avoid subtle crashes.

27

Test Your Shared Code

B24 lessonsPRO

Write fast, reliable tests that run in commonTest and on every target.

28

Architect a Real KMP App

B24 lessonsPRO

Assemble layers, modules and boundaries into a maintainable production architecture.

29

Publish a Kotlin Multiplatform Library

B24 lessonsPRO

Package and release a reusable KMP library for other teams to consume.

30

Performance, CI/CD & Shipping KMP

B24 lessonsPRO

Profile, automate and release a KMP app confidently to both stores.

FAQ

Frequently Asked Questions

Is the Kotlin Multiplatform Academy course free?

Yes. You can start the Kotlin Multiplatform Academy course for free and complete its interactive lessons at no cost. An optional PRO subscription unlocks advanced AI tools and a shareable certificate.

Do I need prior experience to learn KOTLIN?

No. The course begins with the fundamentals and gradually moves to more advanced topics, so you can start even with no prior KOTLIN experience.

How will I learn KOTLIN on CoddyKit?

You learn by doing. Short interactive lessons pair a clear explanation with a hands-on coding exercise that runs in real time, and a 24/7 AI tutor gives personalized help whenever you get stuck.

Do I get a certificate for completing Kotlin Multiplatform Academy?

Yes. PRO learners can take an exam and earn a shareable certificate of completion with a verifiable code for the Kotlin Multiplatform Academy course.

Can I learn KOTLIN on my phone?

Yes. CoddyKit is available on the web and as native iOS and Android apps, so you can learn KOTLIN on any device and your progress syncs across them.

Start Kotlin Multiplatform Academy Now

Join thousands of learners mastering programming with AI-powered lessons.

Get Started Free →Browse All Courses