Precision cardiovascular resonance frequency breath pacer for Garmin smartwatches.
The app is available for free in the Garmin Connect IQ App Store.
The source code is not open sourced yet.
Peak Frequency is a precision breathwork and heart rate variability (HRV) biofeedback application built for Garmin wearables. It implements the gold-standard 2-round assessment protocol developed by Dr. Paul Lehrer and modern physiological research (Hasuo et al., 2023; Vaschillo et al., 2006) to identify your unique cardiovascular resonance frequency to within 0.12 BPM.
At your individual resonance frequency:
- Respiration and heart rate oscillations align in 0° phase synchrony.
- Heart Rate Variability (Delta HR / RSA amplitude) is maximized.
- Baroreflex sensitivity reaches peak gain.
- Personalized Anatomical Starting Point: Centers coarse frequency search using height and sex estimates (Hasuo et al., 2023).
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2-Round Bracketed Protocol: Coarse assessment followed by fine-tuning at
$\pm 0.12$ BPM precision. - Somatic Cues: Direct, intuitive breath prompts to prevent hyperventilation and promote diaphragmatic breathing.
- Motion Guardrails: Onboard 3-axis accelerometer monitoring alerts you to stay still during calibration intervals.
- Standalone On-Device Execution: Completely autonomous on your Garmin watch with standard FIT session and continuous RR-interval recording.
- Garmin Connect IQ: Peak Frequency Store Listing
- Landing Page: https://mesw.github.io/PeakFrequency/
- Privacy Policy: Privacy Policy
- App Store Description: docs/app_description.md
This application is intended strictly for general informational, wellness, and athletic breathwork reference purposes. It is not a medical device and is not intended to diagnose, treat, cure, mitigate, or prevent any disease, illness, or medical condition. It does not replace the advice of a medical professional. Always consult a qualified healthcare provider regarding any medical questions or prior to beginning any new respiratory or physical training program.