iphone heart rate app

By Chris Gullo 12:26 pm October 4, 2011
Azumio's Instant Heart Rate app has passed the 10 million download mark, the company announced this week, making it one of the most popular health apps on the market. The app claims to measure a user's heart rate in only 10 seconds by using the smartphone's camera and flash to track color changes in the light that passes through the index finger as new blood is delivered with each heartbeat....