Image Apps Using Flutter and Dart

 Develop image apps using Flutter

Flutter is a nice cross platform framework. However, it's hard to develop image apps such as pixel manipulation or drawing apps due to lack of double buffer. For the drawing app, you'll have to remember all the drawing paths and redraw them every time. 

Since dart is a single thread, you'll have to use isolate to process image pixels to prevent the UIs from blocking. It can be very costly to copy data between isolates constantly. I'm not sure if it is possible for Flutter to provide double buffer function due to the underline graphics engine limitation. What is your experience on developing image apps using Flutter?