When you're stressed, your heart and breathing get out of sync. Breathe Sync gets your breathing and heart back in sync fast, so that you feel more relaxed and think more clearly. (No external sensor required.)Breathe Sync is a simply designed iPhone app that helps you get in sync wherever you are. It picks up your pulse through your finger on the iPhone camera lens, analyses it and gets you breathing in sync with your heart. We call this synchronised biofeedback breathing. You'll call it 'a great way to feel great fast'.After only 1-3 minutes you will feel more centred, more relaxed and more able to think clearly. Breathe Sync directly affects your Autonomic Nervous System which helps reduce your stress levels.It is also the world's first biofeedback breathing app that also gives you a well-being score, your WQ, so you can track your progress. Your WQ is based on your pulse rate variation, which is affected by your nervous system, and gives a good indication of your inner well-being. Over 16,000 people around the world use Breathe Sync for a number of things everyday -1, To reduce stress2, To relax3, To get in the zone (to perform, to create or to produce)4, To alleviate anxiety5, To aid mindfulness and meditation6, To prepare for sleep7, To lower blood pressure*8, To increase self-control9, To improve their immune system10, To measure and track their inner well-being11, To feel good fastGet in sync now. Follow your heart.Breathe yourself better with Breathe Sync.- For iPhone 4, 4S, 5, 5c, 5s, 6 with iOS 7 or 8 -*NB: This is not a medical application & is not intended to replace the advice of a physician or doctor. If in doubt consult your physician or doctor. Not ideal on iPads or iPhone 6 plus due to placement or lack of camera flash.