Sorry to semi necro this thread, but I do a search for an android h9 a every couple months in hopes that one is finally available.
At one point in time the manual did state that an android app was planned. It actually said it on page 2 while talking about h9 control. Last line of the paragraph states ” A version of h9 control for your Mac/PC and for Android devices is planned.” This line appears to be removed from the current manual I downloaded which made me find my original. If you’d like, I can take a picture and upload it.
As the op stated it was one of the reasons I bought mine several years ago before the max and core were available and am still somewhat disappointed I can only use my pc at the moment to configure.