1. I learnt that a mobile app is a computer program that is designed to run on a mobile device such as phone, tablet or watch. Some mobile apps can help children manage their emotions. Some apps also allows educators easy access to complimentary programs that can be used to teach students about specific content areas.
2. My English improved well because I had to search more about the mobile app, learn new words and new things about it.
3. I learnt that the full meaning of 'app' is application.