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Heart zone simply lets you see your current heart rate zone and history during your workout on your Apple Watch.HELPS KEEP YOU IN THE ZONEHeart zone displays your age-adjusted heart rate zone and history during your workout while giving you haptic taps when your heart rate changes workout zones. You're now able to know how long your heart rate has been in a current zone and decide if you need to ease off a bit, keep the same pace or work harder to achieve better results from your workout.SIMPLE TO USE WATCH APPHeart zone is made for your Apple Watch with a user interface that is easy to read from a glance. An instant background update has you simply seeing your heart data on your Watch.Heart zone displays on the Apple Watch Current BPM Current age-adjusted heartbeat zone Heartbeat zone history graph Total % time spent in each zone during the course of your workout Total workout time Workout summaryINTERFACE CREATED FOR QUICK GLANCESHeart zone has a unique UI the allows you to get a quick glance at your current heart rate zone and history during a workout session from your Apple Watch.REQUIREMENTSiPhone with Health App installed and Apple Watch to read and display heart beat readings from the Health Data store.This app has been written to take advantage of the new Watch OS 3 features.