Look at you - going for a run without a gizmo to track your progress and bother your friends on Facebook. Lame, right? Well grab your sneakers, because the Nike+ app had landed in the Play Store, and it's free.
The app connects you to nikeplus.com, which acts like a portal for all the social features in Nike+, as well as a larger interface to check out your run data. There is no additional hardware needed to use Nike+. Just load up the app, and it uses your phone's GPS and accelerometer to record your pace, distance, and time.