Ultimate Compose Multiplatform: Android/iOS + Testing (Udemy.com)

Stop Building the Same App Twice! Master Compose Multiplatform

--- Update (March 2026): New videos are being added for the Bonus section (Biometric Authentication in Compose Multiplatform project) ---

Unlock the power of Kotlin code-sharing. Build a professional, native-performing crypto wallet app for both Android and iOS from a single codebase!

Hey there, Kotlin developers!

Are you tired of duplicating your effort for Android and iOS? Ready to level up your career and become a highly sought-after mobile developer? This course is your definitive, hands-on guide to mastering Compose Multiplatform.

Forget boring, abstract examples. Together, we are going to build "CoinRoutine", a feature-rich, practical Virtual Crypto Wallet app from scratch. You won’t just learn the what—you'll deeply understand the why behind every decision, from clean architecture to pixel-perfect UI polish.

By the end of this course, you’ll have the skills (and a stunning portfolio piece!) to prove you are an industry-ready Compose Multiplatform developer.

What You Will Build: The "CoinRoutine" Crypto Wallet

This isn't just another to-do list app. You are going to build a complete, real-world application with features that mirror exactly what you'd see in a professional development environment.

• Live Crypto Data from the Web: Connect to a real-time API using Ktor 3 to fetch dynamic data for the top 100 cryptocurrencies. You'll master network requests and JSON parsing like a pro.

• Canvas & Custom Charts: Go beyond basic UI! Use Compose Canvas to create a beautiful price chart that visualizes crypto movements, fully supporting both Light & Dark themes.

• Persistent Portfolio Management: Allow users to manage their crypto portfolio with a local database. We'll implement Room 2.7 annotations to create a seamless, shared database schema for both platforms.

• Clean, User-Friendly Input: Build a simulated "Buy & Sell" feature with custom TextFields, input validation, and visual transformations for an incredibly intuitive user experience.

• Modern & Safe Navigation: Structure your app's flow with type-safe Compose Navigation to prevent runtime crashes and ensure a predictable user journey.

• Robust Error Handling: Great apps don't crash when things go wrong. Build a flexible error-handling system for network and database operations, displaying clear messages using shared Compose resources.

Technologies & Architectures You'll Master

This course dives deep into the professional-grade tools and architectures that top tech companies demand.

• Architecture: MVVM & Clean Architecture for scalable, testable apps

• Dependency Injection: Koin 4 for managing shared and platform-specific modules

• Networking: Ktor 3 for modern, asynchronous API calls

• Database: Room 2.7 for powerful, shared local persistence

• Image Loading: Coil 3 for highly efficient image rendering

• User Interface: Material 3, custom fonts, & Edge-to-Edge display support

Go Above & Beyond with Advanced Sections

We don't stop at the basics. Two exclusive bonus modules will push your skills to the senior developer level:

Extra 1: Bulletproof Your Code with Testing

• Write robust Unit Tests for your ViewModel logic to ensure your business rules are rock-solid.

• Master Compose UI Testing to verify your screens look and behave exactly as expected.

Extra 2: Advanced Platform Integration

• Implement secure Biometric Authentication (Face ID & Fingerprint) natively for Android & iOS.

• Refine your app with custom animations and advanced permission handling for a polished, App Store-ready experience.

Why This Course Is Different

• Project-Based from Start to Finish: You learn by doing. Every concept is applied directly to the CoinRoutine app. No filler, just practical skills.

• No "Perfect" Scenarios, Just Real Code: I show you the real development process. You'll watch me debug issues and fix bugs as they naturally appear—because that’s how real-world engineering works!

• Bleeding-Edge & Future-Proof: We use the latest stable and experimental library versions to ensure your skills are relevant today, tomorrow, and beyond.

Ready to Become a Compose Multiplatform Expert? Don't get left behind in the mobile development revolution. Enroll now and start building your future today!