For any Athletes or sportsmen it is very essential to always have a handheld device with them, that can monitor basic vital signs of the body. However, not everyone can afford to buy a dedicated device, which costs several hundred dollars. For all of them the perfect solution is Cardiio app, designed for the iPhone.

Cardiio app
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With this application, you can measure your heart rate and respiratory rate, with the help of iPhone camera. The principle behind operation of Cardiio is quite simple: the app carefully analyzes the amount of light reflected off your skin or face.

The working principle behind Cardiio app is also explained in the app itself, which says,

Cardiio’s technology is based on cutting-edge research and science conducted at the MIT Media Lab.
Every time your heart beats, more blood is pumped into your face. This slight increase in blood
volume causes more light to be absorbed and hence less light is reflected from your face.
Using sophisticated software, your iPhone’s front camera can track these tiny changes in reflected light that are not visible to the human eye and calculate your heart rate.

To obtain the most reliable results on the iPhone, just hold your phone and look straight into the camera to get your reading, It should be noted that while doing measurements make sure the area is well lit and focus yourself is the center of the rectangular frame, and keep still for a few seconds. The application displays the result and even make a prediction of your life expectancy based on the current frequency of arrhythmias.

The app is the result of a 3-year study by scientists from the Massachusetts Institute of Technology (MIT). For the calculation and process of analyzation in real time using advanced algorithms, developers also implemented their own best practices in the field of optical technologies.

Cardiio app for iPhone is available in the App Store for $ 4.99, which is much cheaper than the cost of a traditional instrument for measuring the pulse. The application is compatible with iPhone 4, iPhone 4S, iPod touch (4th generation), iPad 2 Wi-Fi, iPad 2 Wi-Fi + 3G, iPad (3rd generation) and iPad Wi-Fi + 4G.Requires iOS 5.0 or later. The Cardiio app for ios is most suitable to use with a front-facing camera and dual-core device such as iPhone 4S and iPad, however it will also work on single-core with some variations in reading.

Download Cardiio for iPhone and iPod touch  [ iTunes ]