Flutter is used for building high-performance, visually attractive, and responsive mobile applications for both iOS and Android platforms. It is known for its fast development time, rich set of customizable widgets, and its own high-performance rendering engine.
React Native, on the other hand, is used for building native-like mobile applications for both iOS and Android platforms. It allows developers to write code once and run it on both platforms, saving time and resources compared to traditional native app development. React Native provides a fast development process with its "hot reload" feature, and has a large and growing community of developers to support it.
In conclusion, both Flutter and React Native are popular choices for building cross-platform mobile applications, with each offering its own unique features and advantages.
The video training from Intellipaat, which covers both React Native and Flutter, is therefore recommended if you're interested in learning more about these topics. The use of it is totally free.