eCOMPOSITE today released 321Run Lite 1.0, a free version of their health based running app for iPhone and iPod touch. 321Run Lite is the free version made for users of 321Run, a GPS-enabled version that also records the distance, calories and tells you and your friends what distance you ran. 321Run Lite is your coach on our iPhone. Plug your earphones and listen to it tell you when to change rythm, and how long youve run.