Flutter Performance Mastery: 10 Secrets to Make Your App Fly (60 FPS Guide) | Easy Flutter
Article Summary
Your Flutter app looks beautiful but scrolls like molasses? You're not alone—and it's probably not Flutter's fault.
Roshni Savaliya, a Flutter Team Lead, shares hard-won performance lessons from years of building production apps. This guide tackles the most common culprits behind janky animations and slow load times, starting with the fundamentals of Flutter's Skia rendering engine.
Key Takeaways
- Use const constructors to prevent unnecessary widget rebuilds and save CPU cycles
- Flutter renders every pixel via Skia engine, not native components
- Widget keys control rebuild behavior and prevent performance pitfalls
- Understanding what triggers redraws is the golden rule for 60 FPS
Most Flutter performance issues stem from unnecessary widget rebuilds, not framework limitations.
About This Article
Flutter developers who think like web developers often build apps that stutter during animations and load slowly. Roshni Savaliya points out that unnecessary rebuilds waste CPU cycles every time the state changes.
Use const constructors for widgets when their properties won't change. This lets Flutter create and render these widgets once instead of rebuilding them every time the parent widget rebuilds.
When you use const constructors and manage widget keys properly, you can hit 60 FPS. Your app goes from feeling sluggish to smooth and responsive.