HRV - Introduction to Real-Time Biofeedback for Stress Management and Performance

Today we're looking at a new Heart Rate Variability tool called Heartmath
Unlike Welltory, the great free app that gives you a daily snapshot of your overall HRV and autonomic nervous system, Heartmath is an affordable biofeedback training tool that allows you to view and train your autonomic nervous system in real time.
In other words, you can physically watch your HRV change as you use your breath to control your stress response.

[@MrNihilius]

Many Thanks for that little review!

[@sfasscio]

Hi
I've recently been interested in HRV and biofeedback in breathing. The Inner Balance app is very interesting, I have seen users who use the Elite HRV app + the Polar H10 heart rate monitor for breathing but it is not like the Inner Balance app which releases biofeedback while doing breathing exercises ....
If I have understood correctly, we obtain cardiac coherence when our inhaling lasts as long as the heart rate rises while when we exhale the heart rate decreases in turn trying to obtain a linear sinusoid and based on the RMSSD value we can find the biofeedback or if it rises does it make us understand that we are doing well?
Is this the basis of the inner balance app or is there something else?
Thank you