Flutter Performance

Identify, measure, and fix Flutter performance issues: frame jank, widget rebuilds, list performance, image loading, startup time, app size, and memory.

Protocol: measure first → identify bottleneck → apply smallest targeted fix → measure again. Never optimize code that has not been profiled.

Target Metrics

• Frame render time: < 16ms (60 fps) or < 8ms (120 fps)
• Startup to first frame: < 2s on mid-range Android
• Memory: no sustained heap growth (no leak)
• Release APK size: < 15 MB for most apps