BreathTuner HRV 4+

I saw your response about why you cannot support the H9 polar sensor so I bought an H 10, and I bought the pro version of this app. The one problem is that the measurement feature does not seem to be working for me. I’ve connected my heart rate monitor, and when I start the measurement it says collecting heart rate data or something like that. And it has a picture instruction, telling me to tuck my phone into my waist band. But even after I took my phone into my waist band, and I’m doing abdominal breathing for several minutes, that helps screen never goes away, and I never get any verbal instructions on what to do. Just continuously shows that image that tells me to put the iPhone in my waist band. I have double checked that I’m doing it right according to the instructions. I have the phone upside down, charging port facing up, the displays facing out, the phone is talked about halfway into my waist band, and it is rising and falling with my breathing. Please let me know if I’m doing something wrong or perhaps if there is a bug with the app or if there’s anything I can send you to help you diagnose the problem. I’ll also reach out via email.

Hi Dan, thanks for your positive review. The H9 lacks the ECG function. When the ECG is enabled, the H10 provides good detection of heart-breath synchronization.
Regarding your issues with the H10, please email me (info@breathtuner.app) to clarify.

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 timer so I don’t have to use an external timer to time a session.

Other than that, the app is great!

Thanks for your positive review and for your very helpful suggestions. The next version of the app will include the features you requested.

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 different respiratory rates ranging from 4-7 breaths per minute. The extra automation this app promises isn’t worth the fuss.

Thanks for your feedback. We agree that it takes some practice to get it right. But please keep in mind that this app's recommendations are based on HRV values AND breathing data recorded from your belly movement. To our knowledge, no other app currently offers this feature.