Reads your real heartbeat from tiny colour changes in your face, then paints it as an aura that pulses in time with it.
Good, even light on your face
Hold the phone steady and keep still
Give it 10–15 seconds to lock on
How it works
Every heartbeat pushes a little more blood into the skin of your face, which changes its colour very slightly. The camera can't see it by eye, but averaged over thousands of pixels it shows up. The app tracks your face, measures that colour change (the POS rPPG method) and finds its rhythm — your pulse.
Your outline is found with an on-device person segmentation model. Nothing leaves your phone.
Calm mode paces your breathing at six breaths a minute (4 seconds in, 6 out). Slow breathing like this is a well-established way to settle your nervous system, and your heart rate usually drifts down as you do it. Watch the aura shift towards blue.
The honest bit: the pulse is real; the colours are made up. Slower heart rate is mapped to indigo and blue, faster to orange and red. Auras themselves aren't a measurable thing. Not a medical device.