Flutter is a popular open-source framework for creating mobile apps due to its wide range of features. It offers a large collection of customized widgets to assist developers in creating visually appealing and functional user interfaces, enables developers to quickly create apps for both the Android and iOS platforms, and offers high-performance apps. It also allows developers to see changes they make to the code immediately reflected in the app without the need to restart it.
If you are interested in learning more about Flutter, then I would like you to go with this video tutorial by Intellipaat. This tutorial has covered everything. Upon completion of this tutorial, you will have a better understanding of Flutter and be able to build your own simple applications.