Live heart rate zones
See your current zone, heart rate, time in zone, and target range while you train.
Learn more →Heart rate training for iPhone + Apple Watch
Train in the right zone.
Zone 2 makes heart rate training simple: see your zone live, get alerts when it changes, follow weekly goals, and build intervals for VO₂ max training.
Download on the App StoreFree to download · In-app purchases
Z2
Live zone guidance
Live zone guidance
iPhone + Apple WatchLive workout tracking
Audio + hapticsOptional zone alerts
Bluetooth monitorsCompatible live heart rate
Strava connectionUpload distance workouts
One app. Five zones.
Everything you need to train by heart rate.
From steady Zone 2 sessions to high-intensity intervals, the app keeps the numbers visible and the guidance close.
Weekly zone goals
Track daily, weekly, and monthly zone minutes with clear progress and workout charts.
Learn more →VO₂ max intervals
Create simple work-and-recovery intervals with a target zone for each segment.
Learn more →Apple Watch app
Train from your wrist with dedicated screens, haptic feedback, and optional alerts.
Learn more →Zone calculator
Automatically calculate zones with Heart Rate Reserve, or adjust them yourself.
Learn more →Health trends
Review zone minutes, resting heart rate, and VO₂ max together over time.
Learn more →Track zones live
Less staring. More training.
Follow your current heart rate zone on iPhone or Apple Watch. Optional audio, haptic, and zone-change alerts help you respond without constantly checking the screen.
- Live zone and time-in-zone display
- Zone goal and open goal modes
- Apple Watch-to-iPhone mirroring
- Dynamic Island and Lock Screen Live Activities
Build your aerobic base
Make every week add up.
Choose a weekly Zone 2 goal and see how every workout contributes. Explore daily, weekly, and monthly charts, then look across your health trends.
Z1Z2Z3Z4Z5
Your next workout has a zone.
Track it live with Zone 2: Heart Rate Training on iPhone and Apple Watch.
Download on the App Store