GlowPulse

Your camera is now a heart-rate sensor – Mac & iPhone

123 followers

Your camera is now a heart-rate sensor – Mac & iPhone

123 followers

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Health & Fitness

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Fitness

GlowPulse measures your heart rate from your camera using rPPG – no watch, no chest strap, no wearable. On Mac it lives in the menu bar; on iPhone it's a standalone app. Live BPM, a 1-hour trend graph, color-coded zones, Pomodoro focus, breathing sessions with real-time HRV, and a 30-second stress check. Optional Apple Health export on iOS. 100% on-device: frames are processed in memory and discarded. No cloud, no account, no telemetry. Free 3-day trial. $4.99/year or $9.99 lifetime.

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GlowPulse Launches

GlowPulse for iOSYour iPhone's camera is now a heart-rate sensor

Launched on August 11th, 2026

GlowPulseYour Mac's camera is now a heart-rate sensor

Launched on June 2nd, 2026

Forum Threads

p/glowpulse

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2mo ago

I tested GlowPulse against a Polar H10 chest strap – here are the real numbers

At launch a few of you (rightly) asked how accurate reading heart rate from a webcam actually is. So I stopped hand-waving and measured it.
Setup
GlowPulse and a Polar H10 (chest-strap ECG, the practical gold standard) recording at the same time, second by second, across 9 sessions and ~3.5 hours total, in good light, dim light, movement, and dark.

What I found

Good light, sitting still: off by about 1 BPM from the strap on average (0.6 to 1.3 across sessions), within 5 BPM 95% of the time. Shows a value the whole time.
Dim light / movement: error grows to roughly 2.5 to 2.9 BPM. It follows the trend and only lags the fastest spikes.
Dark: it mostly goes quiet, showing a number about 1 time in 10. I'd rather show nothing than something wrong.

To be clear
GlowPulse gives wellness estimates, not medical measurements. Polar H10 is named only as a neutral reference, no endorsement implied.

p/glowpulse

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3mo ago

Building a heart-rate monitor for Mac without a wearable – what we learned

Hey ph

I'm launching GlowPulse on June 2nd a menu-bar app for mac that reads your heart rate from the built-in camera (rPPG, no wearable). Started as a python prototype, rewrote in swift, took a detour through CoreML.

Some things i didn't expect:

- vision face detection every 10 frames creates a ~90 bpm ghost peak right inside the heart-rate band fixed by running every frame with ema-smoothed bounding box (=0.35);

View all

What I found

Good light, sitting still: off by about 1 BPM from the strap on average (0.6 to 1.3 across sessions), within 5 BPM 95% of the time. Shows a value the whole time.
Dim light / movement: error grows to roughly 2.5 to 2.9 BPM. It follows the trend and only lags the fastest spikes.
Dark: it mostly goes quiet, showing a number about 1 time in 10. I'd rather show nothing than something wrong.

To be clear
GlowPulse gives wellness estimates, not medical measurements. Polar H10 is named only as a neutral reference, no endorsement implied.