Flutter: Flutter is google's mobile app SDK for crafting high quality native experience on Android & IOS. Flutter works with existing code, is used by developers and organizations around the world, It's free and open source. Why did flutter choose to use Dart? Developer productivity. Object oriented. Predictable, high performance. Fast allocation Flutter Doctor for view updated version for showing updated android SDK for showing connected devices Introduction to Dart: Dart is a general purpose programming language originally developed by google. It is used to build web, server, desktop and mobile application. Dart is object oriented, class defined, garbage collected language. Using a c-style syntax that trans-compiles optionally into javascript. It's supports interfaces, mixins, abstract classes, reified generics, static typing and sound type system.