Runkeeper is a GPS fitness-tracking app for iOS and Android with over 40 million users.

SportyPal is a web site that helps you improve your running or cycling performance using your gps enabled mobile phone.

Zombies, Run! is a mobile for iOS and Android platforms.

Strava is a website and mobile app used to track athletic activity via GPS.

MyFitnessPal is a free smartphone app and website that tracks diet and exercise to determine optimal caloric intake and nutrients for the usersgoals and uses …