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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. Stay in your target heart rate zone with real-time feedback and instant workout alerts. No subscriptions.
Train Smarter with Your Apple Watch
HeartOxy helps you train in the right heart rate zone — with real-time feedback during your workout, guided by your recent heart rate trends.
No subscriptions. No extra devices. Just your Apple Watch.
Train Based on Your Daily Condition
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
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
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
After each session, understand how you performed:
• Time spent in each heart rate zone
• Workout history and trends
• Export your data for deeper analysis
Smart Alerts That Keep You Focused
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.
Built for Apple Watch
• Uses Apple Watch heart rate sensors
• Works during structured workouts
• Seamless sync between Watch and iPhone
No Subscription
One purchase. Full access.
Important Notes
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 hasn’t received enough ratings or reviews to display an overview.
Bug fixes.
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
- Seller
- 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
