Among the main FEATURES of flutter for developing mobile frameworks are:

• Flexibility, scalability, and integration: Flutter's easy-to-use and easy-to-integrate framework PROVIDES enhanced flexibility, scalability, and integration capabilities.
• Hot Reload: If the developer modifies the code, the changes can be seen immediately with Hot Reload. Thus, the changes are instantly visible within the app.
• One-Stop Solution: Flutter app development relies on a single framework and platform for the development, deployment, and management of changes, rather than using separate platforms and frameworks for different purposes.
• Native Performance and Internationalized Flutter Libraries: Flutter app development provides widgets customized for ANDROID, iOS, and Google Fuchsia.  Using widgets, you can integrate all the functionalities of the platform, such as scrolling, navigation, icons, and fonts.
• Huge Widget Library: It is because of Flutter's ready-to-use widget library that developers can develop apps faster when using the framework. In addition to a wide variety of widgets, it also includes animations with which you can SPICE up your application.