As someone who ostensibly tries to keep fit, I've found the best way to pretend to lose weight is to fiddle around with iPhone apps during my workout. First, it reduces the mind-crushing pain of exercise and allows me to go to a place in myself where I can avoid the boredom of exertion. To that end I decided to test out the new Nike+ GPS app alongside an old favorite, RunKeeper. Both apps have their pluses and minuses.