PPG-JS · 3-minute recording

HRV Spot Check

A fingertip scan of your heart rate and heart-rate variability, right from your phone's camera.

1. 1 Cover the camera and flash. Place your fingertip gently over the rear camera and flash.
2. 2 Hold still for 3 minutes. Breathe normally and rest your hand on a table if you can.
3. 3 Watch your live pulse. Your pulse, signal quality and variability update while the three-minute countdown runs.

Not a medical device. For personal curiosity only, not diagnosis or treatment.

Find your pulse

Cover the rear camera and flash. The preview should look evenly red.

Cover the lens and flash with your fingertip pad

This camera has no flash the page can control. Turn on your phone's flashlight yourself (or use a bright lamp), then cover the lens and the light with your fingertip.