- Added support for Bluetooth Low Energy heart rate monitors like the Wahoo Blue HR. If you pair the Elevation Tracker iOS app with a heart rate monitor, it will display your current, average and maximum heart rate. If you enter your maximum and resting heart rates into the settings, it will also display your time spent in each of four heart rate zones (60-70%, 70-80%, 80-90% and 90-100%). Heart rate monitoring requires iOS 7. - Added more data to the Pebble watch interface. You can now press the up and down buttons on a Pebble watch to see two additional screens of data.