Separate Notification settings for App is visible! Is there a beta-version app for 365 DataScience ?

Hi Team,
Under the Notification settings of my account, I could see there are 2 settings for E-Mail and App, I am curious to know whether there is a Beta version of the app rolled out (or is it in testing phase). When can we expect the mobile app to be launched. I have been using both desktop and mobile for taking the course for quite sometime. The course videos are perfectly playing fine in mobile but taking the course exam or practice exams on mobile is little cumbersome due to GUI alignment and we have to scroll up/down many times. So I think the mobile-app version will solve this issue.