The best Health & Fitness app on Mobile Premier Awards 2011 according to jury of industry experts
See your every heart beat on the monitor like in ER rooms.
Measure your heart rate instantly.
Instant heart rate uses your iPhones camera to detect pulse on your fingertip. A technique used by medical pulse oximeters now available on your iPhone.
Place the tip of your index finger on iPhone’s camera and in a couple of seconds your Heart Rate will be shown. Instant Heart Rate will beep with your pulse.
A real-time chart will show your every heart beat.
Join 5 millions users who are already using it.
Features:
Heart rate measurement
Real-time PPG (EKG-like graph)
Sharing to Twitter, Facebook and other social networks
+ much more in the full version
NOTE: Works best on iPhone 4 because it has a camera flash. On iPhone 3GS it has to be used with good lighting.
iPod touch is not supported, although it works for some users
NOTE: Make sure that your fingertip completely covers the camera lens. Press gently, since pressing too hard reduces blood flow in your finger and it’s harder to get a result. Make sure that your fingers are not cold. 
 
http://itunes.apple.com/nl/app/instant-heart-rate-free/id409625068