apps / 1504638613
HRV4Biofeedback
Camera-based biofeedback app
A.S.M.A. B.V. · Lifestyle · $9.99 · US storefront
- rating
- 3.4 ★
- ratings
- 29
- updated
- Jul 28, 2026
- released
- Jun 2, 2020
v1.4.6
visible word pool · 5 words
title 15/30 chars · subtitle 28/30 chars
App Store search indexes the title and subtitle together with the hidden 100-character keyword field as one combined pool: any phrase assembled from those words can rank. These are the words of HRV4Biofeedback's pool that are public — the keyword field is not exposed by any API.
from the listing
Improve self-regulation and better cope with stress using HRV4Biofeedback, the camera-based Heart Rate Variability (HRV) Biofeedback app APP FEATURES: > camera-based biofeedback measurement showing real-time heart rate > spot check measurements at rest > frequency power spectrum > biofeedback score to quantify the effectiveness of the practice in terms of deep breathing and duration > resonant frequency analysis to determine the optimal breathing rate for your sessions >…
latest US reviews
★★★★★
Doesn’t work
I wanted to try resonance breathing. Saw this on Reddit. This app doesn’t work at all. Save your $10. Use another app like Elite HRV or Optimal HRV.
— Rocky The Dood
★★★★★
heart rate varies wildly
the heart rate isn't recorded accurately. it dropped from 80 to 30 for about a minute and then up 120. i checked it against my apple watch which had me at a steady 80-85. happy to change the review if i'm missing something in how i'm holding my finger over the camera
— Mixmasterlicious
★★★★★
Excellent app, but could use some updates
This has all that I need for using biofeedback to try to improve my training. It is basic but excellent value. One improvement I'd like to see is better login handling. I've been randomly logged out recently for some reason, and it's a bit of a hassle to log back in. I would also…
— wcbjmx
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