The release version of the Insta360 Air app (version 1.0.0) is now available on the Google Play Store.
The release version has many improvements over the previous public version of the Air app, including livestreaming to YouTube, and manual horizon correction. Here is a list of the improvements:
Interestingly enough, there was at least one feature that was in one of the nonpublic beta releases that didn't make it to the release version. Version 0.9 of the app was a nonpublic beta version that included livestreaming to Facebook. However, that option was deleted in the release version of the app probably because Facebook still hasn't enabled 360 livestream broadcasts for regular users.
I will do more tests with the Air and the release version of the app.