Tool
https://www.eventbrite.sg/e/no-code-development-platform-demo-build-cross-platform-app-in-days-tickets-512555436107?aff=erellivmlt
https://flutter.dev/
Bài giảng
https://viblo.asia/p/flutter-co-ban-lap-trinh-ung-dung-dau-tien-gGJ596dpKX2