BreathTuner HRV

I bought the pro version and found my resonance frequency to be 5.75 br/min. I really like that you can do the narrow tests to pinpoint resonance frequency. What I would like for in an update are: 1. In the “Breathe” practice part, it would be nice if I could set the rate to 5.75. Currently, you can only set it to 5.7 or 5.8. What is the point of pinning down the breathing rate in detail if the app can’t help you practice at that rate. 2. Also in the “Breathe” part, it would be nice to have a

I’ve yet to get this to work, either with the camera or a Polar H10. My finger keeps slipping and causing it to restart (difficult for a 15-minute test!). The Bluetooth monitor required me to email the dev for technical support (they were responsive and helpful!) but then still caused the app to say “whoops, the data was bad, try again”. If you have a Polar H10 or similar chest strap, I recommend using the Elite HRV app or similar to manually test your average HRV for 2-minute sessions at diff

I paid for this app and was able to see my data to compare brpm. After a phone reset I suddenly can’t access the measurements I take and I am prompted to pay again (and that after investing in their other app as well). Disappointed!