Heart Rate Zone

A free app that connects to an ANT+ heart rate sensor and monitors your heart rate. The GUI is a colour coded dial that shows your heart rate zone based on the Karvonen method, i.e., using your maximum heart rate and rest heart rate. There is a calorie counter and a lap timer for doing intervals.
The app will work on ANT+ enabled phones like the Xperia ARC, HTC Rhyme. It will also work with phones that support USB OTG with a ANT+ dongle connected (see feature photo).
For ANT+ enabled phones the app requires the ANT RADIO SERVICE (free download from Google Play).
For USB OTG enabled phones - Honeycomb or above - both the ANT RADIO SERVICE and the ANT USB SERVICE are required.