Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase. And also Flutter is a free and open-source Google mobile UI framework that provides a fast and expressive way for developers to build native apps on both IOS and Android. The SDK is free and launched as a source developer to explore and create powerful tracking applications around.

Flutter follows the reactive development architecture, but the main thing to know about reactive programming is that it updates UI contents automatically when you update the variables in the code. React Native also follows this principle, but it uses the JavaScript bridge to access OEM widgets. But since the app has to pass this bridge to access widgets each time, it causes performance issues. Flutter, however, omits this bridge altogether and communicates with the native platform using Dart.

Why Flutter.?

Fast Development

Flutter engineered for high development velocity. Stateful hot reload allows you to change your code and see it come to life is less than a second without losing the state of the app. Flutter also ships with a rich set of customizable widgets, all built from a modem reactive framework.

Expressive and Flexible UI

Flutter moves to a widget, rendering, animation, and gestures into this framework to give you complete control over every pixel on the screen. It provides beautiful interface development by decreasing the amount of coding needed for the app interface. 

Native Performance

Flutter apps follow platform conventions and interface details such as scrolling, navigation, icons, fonts, etc. Thus Flutter gives you full native performance on both iOS and Android.

High Performance

Flutter doesn’t require a Javascript bridge and the speed is much faster. Flutter allows accessing all native features and SDKs on all platforms. It will allow you to also reuse your existing Java and Swift codes which make everything approachable and accessible.

Portability

Since Flutter is not just a framework but a complete SDK, it can run on virtually any device with a screen. Third-party ports have been created to build Flutter apps for Mac OS, Windows, and Linux.