Flutter is Google’s portable UI framework that lets developers create iOS, Android, and Web applications from a single codebase. It uses a state-of-the-art engine called Dart to render widgets and UI elements on both platforms, resulting in a smooth and native-like experience for users. It also supports a wide range of plugins, including for native and third-party libraries. It supports the popular continuous delivery model using fastlane, and is integrated with other CI tools such as Travis or Jenkins.

The flutter SDK has a rich set of features, including a flexible design system that reduces the number of code changes required to implement new functionality. The design system uses a core concept called the Widget, which represents drawing to the screen, layout (positioning and sizing), user interactivity, state management, theming, navigation, and more. This makes it easy to use the right design concept for the task at hand.

Another feature that differentiates flutter from its main competitors is the speed of development. Flutter’s hot reload feature allows developers to test and modify code quickly without affecting preserved app states, which can reduce time to production by months or even years.

Flutter has a global community of developers, which helps support the product’s development and growth. The company frequently holds events and meetups, as well as participates in developer forums, GitHub discussions, and other community platforms to provide assistance and solicit feedback. It’s a great choice for businesses looking to develop an iOS or Android application in a short period of time and at an affordable cost.