In the rapidly evolving world of cross-platform development, two modern frameworks have taken center stage: Jetpack Compose and Flutter. Both promise fast development, native performance, and beautiful UIs. But the question remains: can Jetpack Compose, originally designed for Android, outperform Flutter in cross-platform scenarios, especially in terms of performance, ecosystem, and developer experience?
Let’s dive into the strengths and weaknesses of each, look at real-world examples, and explore which framework might be the better bet in 2024.
1. What Are They, Really?
Flutter: A UI Toolkit by Google
Flutter is an open-source UI toolkit developed by Google that uses the Dart programming language. It offers a single codebase for building apps on Android, iOS, web, and desktop. Widgets are at the core of Flutter’s design, and its rendering engine (Skia) allows it to bypass native controls entirely, giving complete UI consistency across platforms.
Jetpack Compose: Android-First, Now Multiplatform
Jetpack Compose is Google’s modern toolkit for building native Android UIs using Kotlin. It’s declarative and reactive, much like Flutter. Recently, JetBrains extended it to Compose Multiplatform, enabling UI development on desktop (via Compose for Desktop) and web (via Compose for Web).
In other words: Flutter is cross-platform by default, while Compose is becoming cross-platform.
2. Developer Experience
Flutter: Familiar for Mobile Devs
Flutter is mature in its cross-platform capabilities. It includes hot reload, a massive ecosystem of widgets, strong community support, and integration with Firebase. However, Dart is not as widely adopted as Kotlin or JavaScript, which can be a hurdle for teams ramping up.
“Flutter makes it easy to build beautiful apps, but Dart was a learning curve for our team.” — Frontend Lead, FinTech Startup
Compose: Kotlin All the Way
For Android developers, Compose feels like a natural evolution. If your team already uses Kotlin Multiplatform Mobile (KMM), Compose Multiplatform is an easy addition. You don’t need to switch languages, and you can share more code across platforms. Tooling support is strong in IntelliJ-based IDEs.
“Compose Multiplatform fit right into our existing KMM stack. We reused 80% of our business logic.” — CTO, Health App Provider
Winner: Compose for Kotlin shops; Flutter for wider language independence and polish.
3. Performance: Can Compose Beat Flutter?
Flutter Performance
Thanks to Skia, Flutter draws everything itself, which gives it smooth animations and consistent performance. But it also means larger app sizes and the occasional native integration headache.
Flutter excels at:
- Animations and custom UI
- Predictable performance across platforms
Compose Performance
On Android, Compose runs on top of native views and integrates deeply with the OS, offering near-native performance. Compose for Desktop uses Skia as well, providing good rendering speeds, especially on JVM-backed systems. But web performance (Compose for Web) is still experimental and can lag behind React or Flutter Web.
In early 2024 benchmarks by JetBrains, Compose Desktop matched Flutter Desktop in most UI rendering tests, though Flutter had a slight edge in frame throughput.
Winner: Flutter wins on performance consistency; Compose closes the gap on Android and desktop.
4. Ecosystem and Libraries
Flutter
With a head start and broader adoption, Flutter boasts a rich ecosystem:
- Thousands of community packages
- Firebase integration
- Material and Cupertino design out of the box
Compose
Compose Multiplatform is catching up fast, but lacks some of the plug-and-play solutions Flutter offers. Libraries like accompanist, decompose, and Ktor help, but often need more customization.
Winner: Flutter, though Compose is gaining.
5. UI Consistency vs. Native Feel
Flutter’s biggest strength is its consistent look and feel across all platforms. Because it renders its own widgets, what you see on iOS is almost identical to what you see on Android.
Compose, on the other hand, leans into native. Compose for Android uses native themes and controls. Compose for Desktop uses JVM-based widgets that feel right on Windows and macOS.
If your goal is pixel-perfect UI parity, Flutter is better. If you prefer native idioms and OS integration, Compose wins.
6. Team Fit and Learning Curve
- If your team already writes Kotlin, Compose has a much gentler curve.
- If your team needs to onboard designers or frontend developers quickly, Flutter’s widget approach and visual consistency are easier to teach.
- Dart is an extra thing to learn, but it’s not hard.
“We had a bunch of JavaScript devs; Flutter was easier for them than setting up Kotlin tooling.” — Head of Engineering, EdTech Platform
Winner: Depends on team background.
7. Real-World Use Cases
- Flutter: Used by Alibaba, eBay Motors, BMW, Google Ads. It’s production-ready at scale.
- Compose Multiplatform: Adopted in JetBrains IDEs, internal enterprise tools, and proof-of-concepts for desktop productivity apps.
Notably, JetBrains uses Compose for building Fleet, their next-gen IDE, proving its desktop capabilities.
8. The Cost of Switching
If you’re choosing today:
- Flutter gives you polish, scale, and strong community support.
- Compose gives you code sharing, deep Kotlin synergy, and native performance.
But switching from one to the other isn’t trivial:
- Flutter’s Dart foundation doesn’t play well with Kotlin Multiplatform.
- Compose doesn’t yet have the same traction or baked-in support for all devices.
Unless you’re building a greenfield app, migrating between them means rewriting your UI layer.
9. Final Verdict: Who Wins in 2024?
- For Android-first teams expanding to desktop: Compose is the better fit.
- For teams targeting mobile + web with a unified design: Flutter shines.
- For large cross-functional teams needing broad hiring support: Flutter still has the edge.
- For Kotlin-only environments or shared codebases: Compose is smarter and more efficient.
At the end of the day, it’s less a matter of raw performance and more about ecosystem fit, team efficiency, and future goals.
Both are strong, and both will continue to improve. The battle isn’t over—but Flutter holds the crown today, while Compose is charging hard from the Kotlin kingdom.
