“Your app works fine in development. Then users complain about lag. What changed?” If you’ve ever thought, “Why is my Flutter widget rebuilding too often?”, you’re not alone. Everything feels smooth while developing. The UI updates correctly. The animations look fine. But once the app hits production, users start reporting: Random frame drops. Scroll lag.… Continue reading How to Build a Widget Rebuild Diagnostics Toolkit in Flutter? (With Code & GitHub)