Was great, but no longer works. – Slow Down Music Trainer Review

I'd been looking for an app that changed the tempo of songs without compromising pitch and sound quality & finally found this one. I must say, for a long time, I was pleased. I enjoy using it to speed up or slow down songs so I can exercise or run to the beat. For The last couple years, I've used the app frequently – at least a couple times a week. However, all of a sudden the app will not work with any of the songs I try to choose from The music loaded on my phone through iTunes. Each time I try a new song, I get an error message stating that the song is probably not on my device – which it is. The old songs I loaded into my favorites section still work, but none of the new songs do. Very disappointed. I loved music trainer.
Review by KristenC2202 on Slow Down Music Trainer.