Not intuitive - doesn't work for shi.... – Rhythm Calculator - Advanced rhythm trainer and metronome Review

I can't figure how how to use this, or its not working on my phone. I'm running 10.0.2 and it doesn't do much of anything. I've read that the developer is not supporting it and the last update was 2014. Why is it still on iTunes. I can't find any documentation so I just through my money away.
Review by Monty son on Rhythm Calculator - Advanced rhythm trainer and metronome.