Heart-rate monitors overview

Heart-rate monitors give Kinni a live BPM feed while you run. Use this topic when you want a chest strap, optical armband, or treadmill-provided heart-rate source to appear on the run screen and in the saved session.

Kinni supports live heart rate from three current paths:

• a Bluetooth heart-rate monitor that advertises the Bluetooth Heart Rate Service;
• a connected treadmill when the treadmill sends heart-rate data;
• an Apple Watch or Wear OS companion watch, covered separately under Wearables and health.

Open Go Run and look under Run devices. The Heart rate monitor card shows whether Kinni is ready to use a separate monitor, reconnecting to the last monitor, or already using a treadmill-provided heart-rate source.

Tap the card to open Scan & connect. From there you can scan, connect, disconnect, or return to the run setup screen.

Kinni prefers a directly connected Bluetooth heart-rate monitor when one is connected. If no separate monitor is connected and your connected treadmill provides heart-rate data, Kinni can use the treadmill source instead.

If the treadmill heart-rate source is active but you want to use a separate monitor, close the treadmill source from the Heart rate monitor card, then scan for your monitor.

Watch heart-rate sources are managed from the Watch card and the Wearables and health setup flow. They are not Bluetooth heart-rate monitor pairings.

Kinni records live BPM values from the active heart-rate source. The session can then show heart-rate statistics and a heart-rate chart when the recorded data contains heart-rate samples.

Kinni does not expose every advanced field a sensor may advertise. For Bluetooth HRM devices, expect BPM support rather than detailed RR interval, sensor-contact, or energy-expended fields.

• Connect to your heart-rate monitor
• Bluetooth vs ANT+ devices
• Apple Watch and Kinni
• Wear OS watch and Kinni