Whether you’re doing a Zone 2, 4 or whatever type of workout, are you tired of constantly looking at your Apple Watch to monitor your heart rate? ZonePRO solves this by announcing your heart rate every time it changes. Launch ZonePRO on your Apple Watch then tap the screen to start a workout. Just that simple. To stop, tap the screen again. View your workout stats on your iPhone that’s paired with your Apple Watch.
Duration of workout in each zone
Time and percentage of workout in each zone
Zone ranges based on age and resting heart rate
Zone 2 / Blue Zone
Zone 3 / Green Zone
Zone 4 / Orange Zone
Zone 5 / Red Zone
Zones are calculated using the Karvonen formula
Zone 1: 50-60% of maximum heart rate (Warmup / Recovery)
Zone 2: 60-70% of maximum heart rate (Aerobic Base)
Zone 3: 70-80% of maximum heart rate (Aerobic Endurance)
Zone 4: 80-90% of maximum heart rate (Anaerobic Capacity)
Zone 5: 90-100% of maximum heart rate (Speed Training)
MAX Heart Rate – (211 – 0.64 x Age)
example: (211 – .64 x 30) = 191.8
