as the release blog post notes more than half of Flutter developers use Windows development tools. Flutter’s UI-tooling is native code and as it works with standard Windows API calls ...

Flutter is an open source mobile UI ... development. Just as a game would ignore most of the existing app framework and ship with its own engine that serves various goals, Flutter apps don't use ...

At Flutter Interact today ... of native mobile with the rapid development and multi-platform reach of portable UI toolkits. Flutter apps are built using Google’s Dart programming language.