Very frustrating

As soon as my screen goes to sleep the entire app pauses - music stops, timer stops and when starting up again the playlist goes right back to the very beginning of the first song. I have to keep the screen on for the full 30 minutes. Also, my playlist kept disappearing and had to be rebuilt 3 times during my run. I wind up spending more time looking at the app than concentrating on my personal fitness goals.

Try another run app about Couch To 5K - Run, Jog, Walk, v1.9