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HeartOxy
Real-Time HR Zones & Alerts
$3.99 · Designed for iPhone. Not verified for macOS.
Train smarter with your Apple Watch - Real-time heart rate monitor, zone feedback, instant workout alerts and personalized guidance to help you stay in your target zone.
Train Smarter with Your Apple Watch
No subscriptions. No extra devices. Just your Apple Watch.
HeartOxy helps you train in the right heart rate zone — with real-time feedback during your workouts, guided by your recent heart rate trends.
Train Based on Your Daily Condition
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Your body isn’t the same every day. HeartOxy looks at your recent heart rate patterns to give simple, actionable guidance:
• See your daily readiness at a glance
• Know when to push a little harder
• Know when to ease into your workout
No complicated metrics — just clear direction.
Real-Time Heart Rate Zone Feedback
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During your workout, HeartOxy keeps you on track:
• Live heart rate zone tracking on Apple Watch
• Color-coded zone indicators
• Instant haptic alerts when you go above or below your target
Stay in your zone without constantly checking your screen.
Customize Your Training Zones
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Set up your preferred heart rate zones and thresholds:
• Warm-up, Fat Burn, Aerobic, Anaerobic, Maximum or Custom
• Adjustable upper and lower limits
• Fine-tune how sensitive alerts should be
Your zones, your training style.
Review Your Workouts
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After each session, understand how you performed:
• Time spent in each heart rate zone
• Workout history and trends
• Export your data for deeper analysis (Up to 90 days of data)
• Built-in CSV Export function for easy analysis and sharing.
Smart Alerts That Keep You Focused
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HeartOxy gives you timely, simple feedback:
• Below Zone → “Pick up the pace”
• In Zone → “In your zone”
• Above Zone → “Slow it down”
Clear, immediate guidance — no guesswork.
No Subscription
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• One purchase. Full access. Family Sharing encouraged.
Built for Apple Watch
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• Uses Apple Watch heart rate sensors
• Seamless sync between Watch and iPhone
Important Notes
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HeartOxy is designed for fitness and training purposes only.
It is not a medical device and does not provide medical advice.
Train smarter. Stay in your zone. Make every workout count.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
We regularly update the app to provide you with a better experience.
The developer, Boon Piow Leong, 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 Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Provider
- Boon Piow Leong
- Size
- 7.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 9.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Boon Piow Leong
