React Native: What is React Native and what is it used for?

React Native — framework for building native mobile apps using React.

Key features:

• Write once, run on iOS and Android.
• Uses React components.
• Native performance.
• Hot reloading.
• Large ecosystem.

Main areas of use:

• Mobile applications (iOS, Android).
• Cross-platform development.
• Rapid prototyping.
• Code sharing between web and mobile.