Flutter draws every pixel to screen, supports Tween and Physics-based animations. There are some short widget of the week videos in their docs. https://flutter.dev/docs/development/ui/animations

Some examples of Flutter apps. There is this community list of apps https://itsallwidgets.com/

Also the Flutter team posted the results of their competition to create apps in 5K or less https://medium.com/flutter/the-flutter-create-winners-are-40...