Most of the tutorials use Flutter's Material Components group of widgets. However, there is a built-in group called Cupertino which looks and behaves identical

Most of the tutorials use Flutter's Material Components group of widgets. However, there is a built-in group called Cupertino which looks and behaves identical to iOS: https://flutter.dev/docs/development/ui/widgets/cupertino https://flutter.dev/docs/development/ui/widgets/cupertino. I built a small app last year on an iPhone 7 Plus and didn't have any problems with scroll stuttering that were not my fault. Techniques were the same for any UI platform: run in release mode, avoiding unnecessary rebuilds, and cell fixed geometry. Don't know which particular demo you've tried, but I wouldn't expect intro tutorials to cover everything. Or perhaps there was a recent regression.