1. Simple mode is great.It is a great app and premiss, but I got it with the hope of using the heartrate monitor feature in conjunction with the breathing tool, but the flashlight kept burning my finger and so I couldn't use it for more than 30 seconds at time like I'd wanted.
2. If you guys debug that aspect of it, I would defiantly give it a try again.The problem is that the biofeedback mode is utterly useless because the heart rate measurements via the camera are so unreliable and noisy.
3. I'd like a simple peaceful sounding heart beat to meditate with or the possibility of listening to both breathe and heartbeat.I have been looking for a Heart Resonance app and this one worked well until it started burning my finger.
4. Would definitely buy if you add support for bluetooth pulse oximeter device.Has all the required settings for HRV biofeedback resonance breath training, including decimal accuracy for inhale, exhale, pause lengths.
5. Even if this is an error on the Google Play store, you should reveal to users yourself on your app how much it costs to buy the app and whether or not that charge is one-time or monthly.I like the simple mode and find it helps calm an relax.
6. Unfortunately cannot get the resonance measurement above 20% at any point - not sure if this is my lack of breath ontrol, a problem with the app or my phone.Lovely interface, great sounds, very relaxing.
7. I really like this app when it works, but it's got some bugs that make biofeedback mode unusable sometimes, and that makes me question it's accuracy all of the time.
8. Love the ambient sound options, but I would like it much more if I could choose to listen to the beat of my heart instead of the breathing rate.
9. Also, as other reviewers have noted, it's not free, but the app also won't tell you how much it is, requesting I enter my credit card without saying how much they will be charging or whether it's a one-time charge or monthly.
10. It gave me no instructions on how to use the biofeedback mode only demanding I give permission to let the app use my camera to take pictures.
11. The samsung S9 has a stress tester that doesn't burn..could the app use that tool? I'm giving 5 stars because it does work for short sessions and they are on the right track.