Cardiio for the iPhone uses the front-facing cam to measure your heart rate

Cardiio for the iPhone uses the front-facing cam to measure your heart rate
Based on MIT technology for measuring the light reflectance off your face, Cardiio for the iPhone is capable of measuring your heart rate as if with a standalone meter within +/- 3 beats per minute error.

Of course, there are a number of complex algorithms calculating on the backend, but the final result is a real approximation of your current heart rate within a very acceptable margin of error, compared to your everyday blood pressure and heart rate monitor.

Not that the EMT's iPhones will replace their medical devices, but it is certainly helpful for quick checkups. Not in the gym if your cardio machine doesn't have this function, though, since the app serves best results at rest and in a well-lit environment. 

Cardiio takes advantage of the blood vessels expanding with every heart pump, which in turn diminishes the light reflectance ratio off your face. It sports a very polished interface, and is available to try out in the App Store right now for $4.99 of your hard-earned cash.

source: Cardiio (iTunes) via RedmondPie



1. SGSatlantis

Posts: 227; Member since: Jul 20, 2011

PA can you please add "advertisment" category to your list. Also there are free apps with the same function, at least in the Play Store.

3. thebest

Posts: 231; Member since: Jul 08, 2012

apple app store also has hundreds of free apps of this kind, but the difference is that this app is more accurate and has a clean ui.....don't bring android into every apple discussion, its all about app store is getting better apps because people are willing to pay for apps....the developers deserve some respect and support for making good apps, its not like, you lash out against the app because it is an iphone app, don't drag the apple vs android into every little discussion, its all about choice, you should compare different apps before judging which is better and which is not, i have the iphone 4s and the galaxy nexus, its all about choice, how can you say about the functionality of any app before purchasing and using it? i love my iphone for the apps, i also like my nexus which is updated to JB

5. SGSatlantis

Posts: 227; Member since: Jul 20, 2011

Take it easy, I've had two iPhones so I'm well aware of the quality of the apps. But since I migrated to Android have no use for the App Store and have no knowledge if such apps existed for free. I meant no offense, just stated my opinion and wanted to let users know there are alternatives to a 5$ app that offers no way to get their money back in case they are not satisfied.

8. Jay_F

Posts: 236; Member since: Nov 29, 2011

So what part of "for the iPhone" did you not understand in the headline then?

10. SGSatlantis

Posts: 227; Member since: Jul 20, 2011

The article started "based on MIT technology..." so I wanted to read it. Jesus, are you all shareholders at apple that take this so personally? It's just acomment that states facts, all true and didn't said one bad thing about the app, the app store or Apple. Give me a break.

6. darkkjedii

Posts: 31281; Member since: Feb 05, 2011

Excellent post

2. Nookie4u

Posts: 133; Member since: Aug 13, 2012

And let the OS wars begin!!!

4. thebest

Posts: 231; Member since: Jul 08, 2012

i hope it doesn't

7. darkkjedii

Posts: 31281; Member since: Feb 05, 2011

As do I. This android vs iOS war sucks now. Let's get back to yankees sox, Michigan Ohio state etc.

9. RapidCat

Posts: 351; Member since: Jun 12, 2012

sorry but i still don't get it, using face to measure your heart rate in my opinion this have low accuracy

11. RomeoJDR

Posts: 245; Member since: Dec 09, 2011

It may be pointless since there are apps that do an accurate job measuring your heart rate by holding your finger over the camera, but I have to admit it is pretty cool if it works. There are not even any healthcare insruments that take heart rates by analyzing your face.

12. Seannyc

Posts: 59; Member since: Jul 21, 2012

Im a currently and andriod user with an ipod touch. When you compare the app stores, there is really not much comparison. The apple app store is easy to use and gave me the more "clean" feeling. The android app store is kinda nerdy for some reason to me. The quality of the app is play store is not up to par with the apple app store. I think it is bcuz apple regulate the apps, while andriod apps have less regulations. If you think i hate andriod u r wrong, i manage to find a p*rn app on my andriod god bless no regulation for google play XD Same with apple, i just like the choice of games they have, thru not a fan of paying for an app.

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