*For iPhone 6, iPhone 6 Plus & iPhone 5s* - Sprinting just got Social.

The first short distance running app - race your friends anywhere, any time. Sprint Social combines the proven benefits of short bursts of high intensity exercise with the motivation of exercising with friends, even if they're not by your side.

Sprint Social harnesses the motivation of exercising with and challenging your Facebook friends, whatever your schedule or theirs. Race side by side, or across time zones and continents. Sprint Social uses Apple's gait recognition to measure your run. That means no waiting for GPS to lock on, no worries about privacy, no difference whether you're inside on a treadmill or out on your favourite 100m stretch.

If you are looking for inspiration to keep you active and improve your fitness, Sprint Social is for you. Sprints are easy to fit into your routine. No need to pace out or find markers in each new location you exercise in, Sprint Social does that for you. To measure the distance you cover, Sprint Social uses the motion sensors in your iPhone. When you hit 100m, your iPhone will vibrate. Take a breather and submit your result before moving on.

When you've put everything you have into that sprint, Sprint Social allows you to look back at your performance. Visualise the explosive power that propelled you from the start and the intensity that you sustained as you raced for the finish line. Each individual sprint, each challenge you complete and every personal best you shatter shows in your activity feed to motivate you.

Sprint Social awards badges for your efforts. Share your achievements on Facebook and inspire others to join you. Friends keep friends accountable so that you stack up those sprints and reach your long term goals of setting faster personal bests, better overall fitness and well-being.

Keep sprinting even when you're not feeling social. Use Sprint Social to keep track of your personal progress and see how you are investing in your wellbeing. You can still look back at your achievements, even if you don't want to show them to anyone else.

Your Apple Watch will notify you when friends accept your challenge of a one to one sprint, when your friends challenge you to a sprint and displays the time of your last race. Always with you, Sprint Social reminds you how hard you worked and motivates you to keep it up, one short sprint at a time.