Mobile app development companies India use a variety of mobile app development frameworks. The most popular ones include React Native and Flutter. A mobile app framework is a software development platform that includes various tools to assist developers in creating mobile apps. Flutter and React Native frameworks have brought about a paradigm shift in the world of cross-platform app development. The main reasons behind this are the rich UI libraries available for React Native app development companies and Flutter app development companies. The UI libraries help a mobile app function seamlessly and consistently on both the Android and iOS platforms.