Why We Chose Flutter Over React Native

The Decision Context

When we started designing Larko — our field team management platform — we faced the classic choice: React Native or Flutter. Both frameworks promise cross-platform delivery, both have large communities. But after two weeks of prototyping, we made an unequivocal choice in favor of Flutter.

This wasn't an emotional decision. We evaluated five specific criteria that matter for production-grade SaaS.

Rendering Performance

Flutter uses its own rendering engine Skia (now Impeller), which draws every pixel independently. React Native, on the other hand, communicates with native components through a bridge (or JSI in the new architecture).

In practice, this means: Flutter animations always run at 60/120 FPS, even complex ones — with parallax, drag-and-drop, and gestures. For Larko, this was critical since workers constantly interact with lists, drag cards, and work with maps.

Single Language — Dart

Dart is a strictly typed language with null safety that compiles to native ARM code. This gives us three advantages:

• Compile-time errors instead of runtime crashes. In a production app with 200+ screens, this saves dozens of debugging hours every week.
• Single stack for iOS, Android, Web, and desktop. We don't maintain separate teams for each platform.
• Predictable performance. Dart has no JIT pauses in release builds, unlike JavaScript in React Native.

DevTools and DX

Flutter DevTools is a category of its own. Widget Inspector, Performance Overlay, Network Profiler — all available out of the box. Hot Reload works in 300-500ms even on large projects.

React Native also has Fast Refresh, but it often breaks on complex state trees. In our experience, Flutter hot reload is more stable and faster.

Ecosystem and Packages

Yes, npm's React Native ecosystem is larger. But the quality of Flutter packages is higher on average. Core libraries (Riverpod for state management, Dio for HTTP, GoRouter for navigation) are mature, well-documented, and maintained.

For Larko, we use:

• Riverpod — reactive state with automatic disposal
• Drift — type-safe ORM for SQLite (offline-first)
• flutter_map — interactive maps without Google Maps dependency

Long-Term Strategy

Google is investing massively in Flutter: Impeller (new rendering engine), WebAssembly support, Gemini AI integration. React Native is also evolving (Fabric, Turbo Modules), but Flutter's release pace is higher.

For a product studio that builds its own SaaS products and client applications, this is critical. We can't afford a framework that "might be" ready in a year.

Conclusion

Flutter isn't perfect. It has weak spots: APK size is larger than native apps, web rendering still needs optimization, and the Dart community is smaller than JavaScript. But for B2B SaaS where stability, performance, and a unified stack are critical, Flutter wins definitively.

We've already shipped Larko on three platforms (iOS, Android, Web) with a single codebase and a two-engineer team. With React Native, this would have been significantly harder.