Turn your iphone into a personal trainer.
No sensor or additional products needed. Just grab your phone and go. From the trail to the treadmill, your iphone accurately track your runs, bike rides and hikes (but if you walk slowly in a same area, it may not correctly record the distance). See detailed stats around your pace, distance, time and metrics at every mile. Also can you view a detailed history of your activities.
Lets start running and track your progress.