Camera Heart Rate Variability is the first and only app that lets you record, plot and export time and frequency domain Heart Rate Variability Features - without requiring any heart rate monitor.
Camera HRV uses a technique called photoplethysmography (PPG for short), which consists in detecting changes in blood volume during a cardiac cycle, by illuminating the skin and measuring changes in light absorption. PPG has become quite a popular non-invasive method for extracting physiological measurements such as heart rate and oxygen saturation. However, most applications today focus simply on heart rate or respiration rate.
Camera HRV can assess cardiac autonomic regulation through quantification of sinus rhythm variability. Since HRV aims at quantifying autonomic regulations, it can be used as marker of sympathetic or parasympathetic predominance, and therefore become relevant in many applications. In athletes for example heavy training is responsible for shifting the cardiac autonomic balance toward a predominance of the sympathetic over the parasympathetic drive, and HRV analysis attempts to quantify this shift.
Other applications span from stress monitoring, assessment of pathological conditions and even emotional regulation during financial decision-making.
- extracts, plots, stores and exports heart rate, rr-intervals, time and frequency domain heart rate variability features (AVNN, SDNN, rMSSD, pNN50, LF, HF, LF/HF)
- configurable time window for feature extraction (30 seconds to 5 minutes)
- automatic RR-interval correction
- event annotation
- comparison between up to 3 recordings lets you get a better understanding of autonomic regulation and sympathetic/parasympathetic activity under different contexts in a glance
- data export/storage on iTunes and Dropbox (csv format, exports heart rates, rr intervals, events and computed features). Data export needs to be performed from the history -> recording view, by clicking on the export button (bottom left).
- integration with the Health app (writes Heart Rate and Heart Rate Variability)
Find out more at this link: http://www.marcoaltini.com/2/post/2014/01/heart-rate-variability-using-the-phones-camera.html
The app is optimized for iphones 5 and 6 (all versions). It should also work on iphones 4S (not 4) with iOS 8.0 or later.
Ratings and Reviews
Doesn’t work, never gets good data
I’ve had this app for a couple of years. It never worked from the day I got it, even after multiple updates. I’ve tried it numerous times, and the app hasnever been able to generate an HRV number due to “poor signal quality. “
This is unfortunate, as the companies other app, HRV4Training, is excellent and highly recommended. Use that up with a heart rate monitor and you’re golden. Ignore this app, it’s not worth your time.
One of the better ones
I have used this for several months and tried it on many people. It works well on most but some peoples' fingers do not have strong enough signals to get a good reading. The only change that should be implemented is to increase the time before it starts recording data. The first minute always provides markedly different data than subsequent minutes.
It would be very helpful if the engineer who created this app would create a page that discusses the values and what they mean. I can understand the relative nature of readings - today was higher than yesterday- but that's about it. A Google search does not come up with much help about values either.
Please add some information about results and this could really be helpful to many people.
It works just fine
I was skeptical to buy after reading the previous reviewers rating. But it actually works quite well. Yes, it takes a little practice and actually requires reading the instructions. But compared to a $150 chest strap monitor, this app is genius. I actually went ahead and then bought the whole package of apps by the developer because I wanted to support a great app!
With Family Sharing set up, up to six family members can use this app.