There is a new crop of apps for your iPhone that can measure your heart rate just by looking at your face! One is called Cardiio. It’s an offshoot from work done at MIT. The other is from tech giant Philips and is called Vital Signs.
The apps work by looking for minute color changes in your face (each time your heart beats, there is a tiny change in face color due to blood circulating). The apps aren’t perfect, but they seem pretty close. I tested the Vital Signs app and compared it’s reading (49 BPM) to my Garmin (50 BPM) and it seemed pretty accurate!
Both are available from the iTunes App Store.