Doesn’t work on airplanes or other ambient-noise situations
First, it IS nice to have a handy way to adjust volume and modes. IF (and only if) you happen to be in a quiet place!
In addition, this system is not at all transparent.
When you put the aids on, you have no idea of the current settings. The app doesn’t tell you the starting place and how to get where you want to go. Instead, using trial and error, you scroll through the choices for both adjustments on each ear.
OK, that can be done; but it seems pretty primitive.
Then when you get to a place where a change is required—like in a meeting, a concert, a restaurant, or an airplane: the app fails to work at all! Seldom is it possible to leave for a quiet place.
So I think 3 stars is quite generous...