I'm also one of those who really would appreciate this feature to save customized exercises. Is there any update on when it will be implemented?

Ah ok, thanks a lot for explaining!

In the interval comparison exercises (where it plays two intervals and asks which is the bigger one, f. ex. 14.2 or 14.5 of the beginner's course) there is already the answer shown, because the buttons show already the interval names (f. ex. quint and quart), so that one already knows which interval...