Terrific app!

I have been using HRV4 for several months now, mainly as a result of a rather severe episode of over-training last year. I’m so glad I found this app! Even after reviewing other HRV apps after I got this one, I believe HRV4 to be top dog. The regular updates based on science are confidence-inspiring. As a retired physician, though I no longer have the opportunity to make recommendations to patients, I do regularly and often recommend this app to my fellow training freaks. It seems to be keeping me out of past troubles. A+

Kwahe about HRV4Training, v6.3.6