Live Apple Watch heart rate. Three-phase adaptive algorithm. 432 Hz Precise Temperament audio. Sacred geometry that breathes with your nervous system.
Steps through 4.5→6.5 BPM, measuring your HR oscillation amplitude at each rate. Your personal resonance frequency — where your baroreflex peaks — is identified and locked in.
HKWorkoutSession activates high-frequency HR streaming (every 1–2s). Real RR intervals feed the coherence engine. Your biology drives the guidance — not a metronome.
A live golden spiral, Fibonacci rings, and Lissajous coherence figure respond to your breath and HRV. The Lissajous tightens from chaotic to a clean ellipse as your heart and breath synchronize.
Coherence 5:5, Ext. Exhale 4:6, Box 4×4, Box 6×6, 3-6-9, Physiological Sigh, 4-7-8, Deep Slow 6:2:8. Three are adaptive. Five are structural. All are clinically grounded.
Six distinct haptic patterns on Apple Watch encode inhale, exhale, hold, coherence lock, pace shift, and drift warning. Breath guidance without looking at a screen.
HeartMath Institute researchers have documented physiological synchronization between groups practicing coherence — measurable, not metaphorical. We are building the technology to make this visible at scale: concerts, studios, sanctuaries.
"When groups meditate together or practice steady, heart-focused breathing, their heart rhythms begin to align. This is not a metaphor — it's measurable."HeartMath Institute · Pathways Magazine, 2025
A large-format display synchronized to audience HRV data, showing the collective coherence field emerge as thousands of hearts entrain to the music. The artist feels the room's resonance in real time.
The teacher sees every student's coherence score on a single screen. Pacing adjusts to the group. Students receive personalized Watch haptics calibrated to the room's collective breath.
Churches, meditation centers, ceremonial spaces. The collective coherence field made visible — a real-time map of group consciousness that deepens the intention of every gathering.
Over the first 5 breath cycles, the app steps through 4.5, 5.0, 5.5, 6.0, and 6.5 BPM. At each rate it measures HR oscillation amplitude — the peak-to-trough variation of your heart rate — which is the time-domain proxy for LF power without requiring FFT. The rate producing the highest amplitude is your personal resonance frequency.
Cycles 1–5The app steps smoothly toward your discovered resonance rate, max 0.25 BPM per cycle so your body can follow without disruption. Simultaneously it tracks phase coherence — whether your HR is rising during inhale and falling during exhale. If alignment is below 55%, the exhale is gently extended to pull your HR into phase.
Cycles 6–10The engine holds your rate and fine-tunes ±0.1 BPM if coherence drifts. Two consecutive coherence locks (≥65% score) trigger the ascending CoreHaptics celebration pattern on your Watch. Session data — RMSSD, SDNN, lock count, resonant BPM — is logged to Apple HealthKit.
Cycles 11+Robert Edward Grant's Precise Temperament: generators Perfect Fifth = 3/2, Major Third = 2^(1/3). The octave closes without comma. Every partial is mathematically exact. Volume breathes with your RSA cycle.
Resonance enters TestFlight beta soon. Join the waitlist for early app access and priority notification when the Collective Coherence Platform opens to practitioners, venues, and studios.