TempoRun App
Currently available: $2.99 Visit their site to learn more
Need a distraction on your run? Try the TempoRun App. Songs in your music library are sorted according to their tempo, ranging from level 1 (walk) to level 10 (sprint). You can adjust your speed with the touch of an arrow on the easy user interface. The app also has streaming TempoRadio that gives you thousands of song pre-categorized by tempo and genre. Your profile page keeps track of your history as well. Compatible with iPhone, iPad, and iPod touch.