Top Running Apps
3 Must-Have Apps for Runners
Endomondo Sports Tracker
iPhone, Android, BlackBerry, Windows Phone (Free; pro $4)
The Endomondo app tracks time and distance, and is a powerful social-networking tool. Friends can follow your progress live and offer "pep talks"—text messages are translated to audio encouragement you hear on the run. The "pro" version lets you chart your data and set time and calorie goals.