# HeartOxy — Real-Time HR Zones & Alerts

> Real-Time HR Zones & Alerts (iPhone/iPad app by Boon Piow Leong.)

- Source: https://appshunter.io/ios/app/heartoxy/id6757838240 (this page in markdown: same URL + `.md`)
- Developer: [Boon Piow Leong](https://appshunter.io/developer/1869053126)
- Category: Health & Fitness, Lifestyle
- Price: $3.99
- Age rating: 4+
- Requires: iOS 16.0 · 7 MB
- Languages: American English
- Released: 2026-02-26
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/heartoxy/id6757838240/reviews.md

## What is HeartOxy?

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
———————————————————-
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
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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
————————————————————
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
—————————
• One purchase. Full access. Family Sharing encouraged.


Built for Apple Watch
————————————
• Uses Apple Watch heart rate sensors
• Seamless sync between Watch and iPhone


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.


## Version history (last 5 releases)

### 1.1.17 — 2026-07-06

Bug fixes.

### 1.1.16 — 2026-06-24

Bug fixes.

### 1.1.15 — 2026-06-23

Bug fixes.

### 1.1.14 — 2026-04-19

Bug fixes.

### 1.1.13 — 2026-04-16

Bug fixes.

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## More apps by Boon Piow Leong

- [Framilia](https://appshunter.io/ios/app/framilia/id6766566724)

All apps by Boon Piow Leong: https://appshunter.io/developer/1869053126

## Related topics

[tymewear](https://appshunter.io/ios/topics/tymewear)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*