Waste of money for novice runner

Hate this app. Wanted something to keep track of interval stats and tell me when to change pace. This doesnt seem to tell me when to switch, and it keeps track of stats but I CANT hear it while Im holding my phone waist/chest level. Apparently this would be better if i had a heart rate monitor and other fancy accessories. i am not a fancy runner. Paid for the whole upgrade because I didnt understand each optional feature. Giant waste of $8, which I think is quite a lot for an app, let alone one I hate. Extremely disappointed.

Runmom43 about Interval Run, v1.6.2