This watchface shows the last 2 hours of your heart rate as a graph.
It will be updated every 3 minutes and autodetects when you take your watch off.
This digital watchface also shows your battery level and 3 customizable complications.

This watchface is for free, but the heart rate functionality is available only for 24 hours. You can purchase the Full Version to have unlimited functionality.

The companion app on the phone is only to help to install the watchface on your phone.

If you want to customize the watchface, please close all apps on your watch. Then do a long tap on the watchface, then swipe to the Heart Rate Watch Face and use the settings button or icon below the watchface.