Giant Heart Rate

View your heart rate from a Bluetooth heart monitor in a very big font, with optional coloring by heart rate zone. Simple.

On some devices, this works by connecting to the heart monitor, but on a few devices (e.g., Polar straps and some MiBands) it listens to Bluetooth broadcasts and doesn't even need to connect. In the scan window, you can see the heart rates of Bluetooth devices with supported broadcasts.