Did a 10mi run with it this morning so I have a few observations and a couple of suggestions. According to the instructions you must keep the iPhone on never lock (not sure about other Apps but Pandora will continue in lock mode). I was also using as an iPod so was a little concerned about battery life but it made through. Well over all iTrail works. Would like to see a timer (it seems to only show the time the Trail name was created and not when you actually start). For some reason the map shows from my house (as the crow flies) to where I stared running even though it wasnt running. I did create the trail at my house. At the start the altitude and speed had a couple of of spikes. Also I’m not sure if it could be done but an auto pause would be nice. When you stop moving for so many seconds (5 ,maybe) to pause and then auto resume when you start moving agin. I had to stop for 6 red lights and a restroom break and would like to have that time netted out with an auto pause feature. It could use a little polish and a few options features but for the first version and for only $3 it’s a must buy for any runner, hiker, biker and walker. It actually should be rated 4 1/2 stars.