RHz Biofeedback
50+
Downloads
Everyone
info
About this app
Find the breathing rate that works best for your body.
Most breathing apps use a generic pace like 6 breaths per minute. RHz helps you discover your personal resonance frequency using real HRV biofeedback.
RHz is an Android app for resonance breathing and HRV training. Connect a compatible Bluetooth heart rate monitor, run a guided sweep, and practice at the breathing pace where your HRV response is strongest.
WHAT YOU CAN DO
• Find your personal resonance frequency
• Run guided full or quick sweeps
• Use adaptive mode during practice
• View live RMSSD, SDNN, and beat-to-beat data
• Track session history and trends
• Keep all data stored locally on your device
WHY PEOPLE USE RHZ
• More precise than fixed breathing timers
• Built for real HRV biofeedback practice
• Useful for recovery, stress regulation, and breathing training
• No account, no cloud, no biometric data upload
HARDWARE REQUIRED
RHz requires a compatible Bluetooth heart rate monitor.
Recommended:
• Polar H10 and other ECG chest straps for best HRV accuracy
Also supported:
• Whoop 5.0 and other high-quality PPG sensors
Some smartwatches may connect over Bluetooth, but HRV quality can vary by device.
RHz is a wellness app for breathing practice and HRV biofeedback. It is not intended to diagnose, treat, cure, or prevent any medical condition.
Most breathing apps use a generic pace like 6 breaths per minute. RHz helps you discover your personal resonance frequency using real HRV biofeedback.
RHz is an Android app for resonance breathing and HRV training. Connect a compatible Bluetooth heart rate monitor, run a guided sweep, and practice at the breathing pace where your HRV response is strongest.
WHAT YOU CAN DO
• Find your personal resonance frequency
• Run guided full or quick sweeps
• Use adaptive mode during practice
• View live RMSSD, SDNN, and beat-to-beat data
• Track session history and trends
• Keep all data stored locally on your device
WHY PEOPLE USE RHZ
• More precise than fixed breathing timers
• Built for real HRV biofeedback practice
• Useful for recovery, stress regulation, and breathing training
• No account, no cloud, no biometric data upload
HARDWARE REQUIRED
RHz requires a compatible Bluetooth heart rate monitor.
Recommended:
• Polar H10 and other ECG chest straps for best HRV accuracy
Also supported:
• Whoop 5.0 and other high-quality PPG sensors
Some smartwatches may connect over Bluetooth, but HRV quality can vary by device.
RHz is a wellness app for breathing practice and HRV biofeedback. It is not intended to diagnose, treat, cure, or prevent any medical condition.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new
- Improved audible feedback reliability during Full Sweep and Quick Tune sessions
- Added in-app Terms of Use and Privacy Policy links with clearer wellness and safety guidance
- Updated first-run acceptance flow for legal updates
- Added a privacy warning before exporting CSV or JSON session data
- Polished production feedback and support wording
- Added in-app Terms of Use and Privacy Policy links with clearer wellness and safety guidance
- Updated first-run acceptance flow for legal updates
- Added a privacy warning before exporting CSV or JSON session data
- Polished production feedback and support wording
App support
About the developer
Yu Jong Chiou-Uen
support@logic-and-light.com
Canada