Listen
Tap Start and, with your permission, HeartCue reads your current heart rate from Apple Health. Each reading shapes the audio in real time.
A mindful signal
Listen. Breathe. Notice.
A simple, private way to make your current heart rate perceptible without staring at a chart.
Breathe
Settle into a safe, comfortable position. Breathe slowly without straining, allowing the exhale to feel easy and unhurried.
Notice
Higher BPM creates quicker, higher-pitched pulses. Lower BPM creates slower, lower-pitched pulses, so changes become something you can hear.
Inspired by biofeedback
A quiet body signal, made audible.
Biofeedback makes a normally quiet body signal perceptible so a person can respond intentionally. HeartCue is inspired by research on slow-paced breathing and heart-rate-variability biofeedback, while providing a simpler signal: current heart rate translated into sound.
HeartCue measures heart rate, not heart-rate variability. Its audio mapping has not been clinically validated, and individual responses vary.
Private by design
Your readings stay on your watch.
HeartCue has no account, analytics, advertising, subscription, or cloud service. Heart-rate readings are processed on Apple Watch, and the temporary workout session used for live updates is discarded when you stop.
Read the HeartCue Privacy PolicySimple from the start
One purchase. No subscription.
HeartCue is planned at $2.99 USD, with comparable local pricing managed by Apple. It requires Apple Watch, watchOS 10 or later, and permission to read Heart Rate in Apple Health.