Used the free version, then got pro. I still get ads. It will only play music saved to your phone in the background, not a music app. It does not alert you when running in the background when you need to change your pace. Nor does it alert you of anything when you turn your screen off. It does not vibrate at all, which is a problem if you have to keep your phone on silent. The app has crashed many times and I cannot figure out why. I emailed the developer to ask questions and tell them about the crashing and the response was essentially "thats just how it is".
ArielleS about Weight Loss RUNNING PRO