Launched in September 2008, the Endomondo Sports Tracker app turns the mobile phone into a full-fledged personal trainer. Endomondo is available to all smartphones containing a GPS, and can be used for running, cycling, walking and all other distance-based outdoor sports.

What sets Endomondo apart from similar apps is that it involves a whole social aspect, making workouts a completely different and more motivating experience. By incorporating community and social features that allow users to challenge friends and share results, user can connect with friends while exercising and create a more competitive workout. Using the website at www.endomondo.com and creating a username and password, friends can even send "pep-talks" which are read aloud to the user while exercising.

And since Endomondo relies on GPS, the app tracks route, distance, duration, split times, calorie consumption, and more, while providing audio feedback on performance. Endomondo offers a full history with previous workouts and statistics, as well as a route map for each workout. On certain handsets, the app also supports integration with the built-in music player and Bluetooth heart rate monitors from Polar and Zephyr.