My favorite app until iOS 11 – m30 pendulum style free (musebook metronome) Review

I used this app in gigs, rehearsals and with my students during their music lessons. Some of the best features were the ability to lock the screen without interruption and the ability to create tempo set lists!! However, with iOS 11 it’s no longer useable which feels like $10 down the drain. Please restore the functionality of this app. I could understand if this were a free service and you can’t spend any more time developing it, but it’s not. It’s an app that your loyal fanbase payed for in hopes to back your cause and get support in return. With that said, an update to restore functionality would be appreciated.
Review by rramos07 on m30 pendulum style free (musebook metronome).