ZoneSteady
Live Heart Rate Zone Monitor
Free
Stop guessing and start training with purpose. ZoneSteady shows your exact effort zone in real time, straight from your Apple Watch.
ZoneSteady turns your Apple Watch into a powerful heart rate zone training tool — completely free, no subscription required.
* Apple Watch is required.
Start a workout on your Apple Watch and instantly see your real-time heart rate mirrored on your iPhone with a color-coded zone display. Whether you're warming up in Zone 1 or pushing your limits in Zone 5, ZoneSteady makes it effortless to train at the right intensity.
REAL-TIME HEART RATE ZONES
• Live heart rate streaming from Apple Watch to iPhone
• 5 color-coded training zones calculated using the Karvonen formula
• Full-screen zone display with bold, glanceable design
• Signal detection alerts you when heart rate data is lost
CUSTOMIZABLE ZONES
• Personalize your zone boundaries with Manual Override
• Adjust individual zone BPM thresholds to match your training plan
• Cascading logic ensures zones never overlap or leave gaps
• Percentages update in real-time as you fine-tune each zone
• Custom zones sync automatically to your Apple Watch
• Reset to scientifically-calculated defaults anytime
17 WORKOUT TYPES
• Running, cycling, swimming, hiking, strength training, HIIT, yoga, rowing, and more
• Start from your Watch or your iPhone — your choice
WORKOUT HISTORY
• Every session saved automatically with duration, calories, distance, and zone breakdown
• Visual zone timeline shows how your effort shifted throughout each workout
• Share workout summary cards with friends and training partners
BUILT FOR APPLE WATCH
• Native watchOS companion app with real-time zone display
• Works with Apple HealthKit for accurate, sensor-level heart rate data
• Landscape and portrait support on iPhone
100% FREE
• No subscription. No paywall. No trials.
• Professional-grade training tools available to everyone.
REQUIREMENTS
• Apple Watch Series 3 or later with watchOS 10+
• iPhone with iOS 17+
• Apple Health app with heart rate permissions enabled
Added a Zone Stats page to the Apple Watch app. Swipe right during a workout to see how long you've spent in each zone, your live BPM, and session averages — all on your wrist.
Also expanded compatibility to watchOS 8+.
The developer, SLV Labs LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SLV Labs LLC
- Size
- 52.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Apple Watch
Requires watchOS 8.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- Copyright
- © 2026 SLV Labs LLC. All rights reserved.