Support
Need help with Resonance: HRV Biofeedback? Email us and we'll get back to you as soon as we can — usually within a couple of days.
Email: support@heartresonance.app
You can also send feedback directly from the app: open the menu and choose Send Feedback.
Frequently asked questions
Which heart-rate monitors work with the app?
Any Bluetooth LE heart-rate monitor that transmits the standard Heart Rate Service works — including Polar (H10, H9), Garmin (HRM-Pro, HRM-Dual), Wahoo, Coospo, and most chest straps. Chest straps are recommended over wrist optical sensors because HRV analysis needs beat-to-beat accuracy. See How It Works for details.
The app can't find my heart-rate monitor
- Make sure Bluetooth is enabled and the app has Bluetooth permission.
- Moisten the electrodes and wear the strap snugly — most straps only advertise when they detect a heartbeat.
- Disconnect the strap from other apps or watches first; most straps allow only one Bluetooth connection at a time.
- Replace the strap battery if pairing is intermittent.
Can I use the app without a heart-rate monitor?
Yes. Guided breathing sessions work without any device — you just won't see live heart-rate coherence feedback or HRV scores.
How do I delete my data?
All heart-rate and session data is stored only on your device. Use Reset History in the Breath History screen, or uninstall the app to remove everything. See our Privacy Policy.
Where can I learn more about resonance frequency breathing?
Start with The Science, browse the Glossary, or try the free Breath Pacer and RF Calculator in your browser.