Hello Michael,
We totally understand that you are annoyed with the Hi Hat bug. This bug was not easy to fix because we were not able to reproduce it. We finally found the problem and made the fix. We are happy to say that we just push to Apple our new version of the app. They have to validate it now. By experience, I think that the app will be live in 3 days max now (crossed fingers).
Concerning the other points, IOS users are as important as the Android one. Our priority is to give to all our clients the best experience as possible.
We gonna hired a new IOS DEV, so things will move faster than the past.
We have a lot of ideas and big improvements for the app !
Thanks for your patience and your understanding again
Jérôme