Strap pairing needs Web Bluetooth, which this browser doesn't support. Connect and record from a supported browser. You CAN still watch a stream here from another device. See supported browsers.
BPM0OFF BODY
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HRV
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ms rmssd
HRVRMSSD MS
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Live HR—
• Not connected
CROP TO THIS ZONE
Posture
Connection
Tap Start session to pair your strap and begin recording.
Battery: —
Broadcast to relay
Publish live HR so other monitors and OBS can read it.
offline
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Background recording
Allow this app to keep recording with the screen off. Without this, Android pauses your session after a few minutes.
checking
Manufacturer settings
Your phone has its own background-app killer on top of Android. Tap Open, then add HR Monitor to the never-sleeping list.
Active broadcasts
Other devices currently broadcasting to your relay key. Stop session tells the remote device to disconnect its strap. Once that happens you can Connect strap here.
Settings
Only available on the broadcasting device.
Show widgets
OBS Browser Source
The URL already embeds your broadcast key. Switch to online mode on the landing page to use OBS streaming.
Width
Height
Paste the URL into OBS → Sources → + → Browser Source → URL field.
Paste the Width and Height numbers into OBS's matching fields to avoid empty space.
Dimensions auto-update as you change widget toggles.
bpmbpmms/min
Ectopic detection sensitivity
3
Higher flags more subtle RR swings. Lower suppresses respiratory-sinus-arrhythmia false alarms during rest / exhale.
Detection also requires a compensatory pause and skips when HR is trending down.