In my opinion, React apps are the future of web and software development. React.js is a genius framework that allows for seamless full-stack development. Not only is React Native capable of writing fully native cross-platform apps, but it is an amazing javascript framework to begin with. If I had to recommend one to learn that has the most use cases and job opportunities in the future, it would be React Native 100%.

If you are looking for job for the current situation of looking for learn Trending technologies in the future. As of now you can see the Jobs with React NAtive, but deffinetly future you will get more offers with Flutter. Flutter it is now come up to support with Mobile,Web,Windows,Mac,Linux. Now you can choose which one you can learn.