I have no affiliation with this developer. I stumbled upon the app last night while researching HRV. Although the app has the ability to record using a bluetooth heart rate strap, the author is quite adamant that the camera is quite accurate....he's doing lots of math on the raw data apparently.. ***iPhone only.*** Like 8 bucks US. This guy seems very serious about providing real value here....all sorts of documentation on his website.
I used it a couple of times so far, and it's super convenient to measure resting heart rate and HRV in the morning without needing a strap. There's also a coach app for those who manage athletes. The author says that individuals can use the coaching app as a "pro" version of the basic app. I think the pro app is about $4/mo.
http://www.hrv4training.com
I used it a couple of times so far, and it's super convenient to measure resting heart rate and HRV in the morning without needing a strap. There's also a coach app for those who manage athletes. The author says that individuals can use the coaching app as a "pro" version of the basic app. I think the pro app is about $4/mo.
http://www.hrv4training.com