Could be better but...

I have the 3g iphone so im not sure if thats the reason the app does not perform as advertised since it is the older version. It measures as long as its lit up, and it will stop your music as soon as you select the app, which is a pain if you want to measure your distance while you run, i have to have music. Since it will stop measuring if its not lit up... My solution for that is to go under settings and set the auto lock to never so it will stay lit the whole time. The measure is accurate but it would be nice if i could listen to my music while the app is measuring.

N_i_c_k_a about Tap Distance Pro