What is the American English Conversation application, how does it work?

According to the introduction of MS apps, American English Conversation is a Education app on the Android platform. There is currently a 6.3.16 version released on Mar 15, 2020, you can see the details below.

American English conversation is helpful app to help you Learn English speaking.With more than 7000 American conversation audio file in most of the categories will help you improve your spoken American English.

Features:
- 2 listening modes (in Settings menu)
+ Audio streaming: Enable - listening online
+ Audio streaming: Disable - must download audio file first and listen it offline