# Hiit Monitor — Real time heart rate

> Real time heart rate (iPhone/iPad app by ryo munetsugu.)

- Source: https://appshunter.io/ios/app/hiit-monitor/id1665952838 (this page in markdown: same URL + `.md`)
- Developer: [ryo munetsugu](https://appshunter.io/developer/1588402265)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 16.2 · 6 MB
- Languages: English
- Released: 2023-01-22
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/hiit-monitor/id1665952838/reviews.md

## What is Hiit Monitor?

This app measures and displays your heart rate in real time,
Supports efficient High Intensity Interval Training (HIIT).

HIIT is said to be several times more effective in reducing fat than general aerobic exercise in a short period of time.
However, in order to obtain the effect, it is necessary to perform high-intensity exercise and maintain the heart rate above a certain level.

By using this app, you can check the real-time heart rate obtained by AppleWatch on your iPhone.
Efficient exercise is possible because you can exercise while checking your current heart rate against the target heart rate.

【function】
・Real-time display of heart rate
The heart rate is obtained with the Apple Watch in a 1-second cycle, sent to the iPhone and displayed.
    You can check your heart rate in real time on your iPhone.

・Manual setting of target heart rate
You can manually set your target heart rate.

・Optimal setting of target heart rate
The optimal heart rate is said to be 90% of your maximum heart rate.
　From the user's age, the maximum heart rate can be calculated and the optimal target heart rate can be set automatically.

【Notes】
This app integrates with HealthKit and measures your heart rate to monitor your health.


## Version history (last 5 releases)

### 1.4 — 2023-02-19

Fixed a bug that the heart rate is not displayed on the iPhone side when the apple wacth app is inactive.

### 1.3 — 2023-02-13

Minor modification of screen design.

### 1.2 — 2023-01-27

Minor modification of screen design.

### 1.1 — 2023-01-24

Fixed the communication logic between apple watch/iPhone to speed up the communication.

### 1.0 — 2023-01-22

No release notes.

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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All apps by ryo munetsugu: https://appshunter.io/developer/1588402265

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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 2026-05-17.*