The applications detects how the colour of your finger changes when blood flows into it. Similar to the way that a medical pulse oximeter works.
* Measure your heart rate using just your iPhone camera
* Graphs illustrate your measurement history
* Different measuring types: Resting heart rate, pre & post-workout heart rate, maximum heart rate
* Heart rate measurement
* Pulse waveform graphs
* Real-time photoplethysmogram (PPG) graph