2. Key Techniques to Optimize Flutter App Performance
4. Efficient Use of Animations
Animations add to UX, but if not optimized, they can slow the frame rate.
Best practices:
Use AnimatedBuilder and AnimatedWidget to optimize custom animations.
Avoid unnecessary loops or timers within animations.
Keep animations simple and leverage hardware-accelerated transitions for smoother performance and better efficiency.
5. Reduce App Size
Lighter apps load faster and use less memory.
How to reduce size:
Remove unused assets and libraries.
Use flutter build apk --split-per-abi to generate smaller APKs for different architectures.
Use ProGuard or R8 to minify and shrink the Android build.
3. Tools to Boost Flutter App Performance
Now that we’ve covered the techniques, let’s explore some tools that every
Flutter Application Development Services provider should have in their toolkit.
1. Flutter DevTools
Flutter comes with a built-in suite of performance and debugging tools to help you monitor, optimize, and
troubleshoot your app efficiently.
What it offers:
UI layout inspection
Frame rendering stats
Memory usage insights
Timeline performance tracking
How to use: Run flutter pub global activate devtools, then launch it via your IDE or terminal.
4. 2. Performance Overlay
Quickly visualize your app's rendering performance.
How to activate:
dart
CopyEdit
MaterialApp(
showPerformanceOverlay: true,
...
)
What it shows:
Red bars indicate UI jank or frame drops.
Helps detect where the app is not maintaining 60fps.
5. 3. Dart Observatory (now part of DevTools)
This is useful for:
CPU profiling
Memory leaks detection
Analyzing garbage collection
It’s especially valuable during long testing sessions.
4. Firebase Performance Monitoring
Ideal for monitoring production apps.
Why use it:
Monitor real-world performance metrics
Track slow network requests
Understand app startup time across devices
At Siddhi Infosoft, we often integrate Firebase into Flutter apps to ensure real-time performance
tracking and improvement.
6. 5. App Size Tool
Use flutter build --analyze-size to identify which packages or assets are increasing your app’s size.
This helps you:
Trim unnecessary dependencies
Identify heavy assets
Make data-driven optimization decisions