Heart rate monitor
GymGoal can connect to heart rate monitors that support BlueTooth 4 (also called "BlueTooth LE" and "BlueTooth Smart"). Your iPhone/iPad/iPod should also have BlueTooth 4 (iPhone 4s or later).
Your cardio workouts will be more efficient if your heart rate stays in the zone that is the best for your goal. In Weight Management zone, for example, up to 85% of burned calories are "fat" calories. You can connect to your heart rate monitor when you log your workout. The "Connect" button will be replaced with your heart rate graph. Tap this graph to select your target zone, and GymGoal will alert you when your heart rate leaves this zone. Your heart rate graph will be saved in your workout history.