# Chest Strap HR Monitor — Zone 2 Training - No Watch

> Bluetooth chest strap heart rate zone training app for iPhone. (iPhone/iPad app by Wojciech Zieba.)

- Source: https://appshunter.io/ios/app/chest-strap-hr-monitor/id6757886667 (this page in markdown: same URL + `.md`)
- Developer: [Wojciech Zieba](https://appshunter.io/developer/1853276764)
- Category: Sports, Health & Fitness
- Price: Free with in-app purchases (on sale, was $8.99)
- Rating: 4.30/5 from 16 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 75 MB
- Languages: American English
- Released: 2026-01-27
- Data updated: 2026-08-30
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/chest-strap-hr-monitor/id6757886667/reviews.md

## What is Chest Strap HR Monitor?

Train in your heart rate zones using your Bluetooth chest strap — no smartwatch required.

Strap Zone connects directly to your heart rate monitor and shows real-time zone data on your iPhone. Perfect for zone 2 training, fat burning workouts, HIIT, or any heart rate-based training.

WHY CHEST STRAP + PHONE?
Chest straps provide reliable heart-rate data during workouts and are often more responsive than wrist-based monitors. Most zone training apps require an Apple Watch. Strap Zone doesn't. Just your phone and your strap.

FEATURES

Real-Time HR Zones (Z1–Z5)
See your current zone with bold, color-coded display:
Z1 Recovery | Z2 Endurance | Z3 Tempo | Z4 Threshold | Z5 VO2 Max

Zone 2 Training Made Simple
Stay in your target zone for aerobic base building, fat burning, and longevity training. Audio alerts keep you in the zone without looking at your screen.

Structured Workouts
Build custom interval workouts with target zones, repeat blocks, and timed segments. Perfect for HIIT, threshold training, or guided zone 2 sessions.

Time-in-Zone Tracking
See exactly how long you spent in each zone during and after your workout.

Workout History
Review past sessions with detailed zone breakdowns and heart rate data.

Optional Apple Health Export
Off by default. If you opt in, Strap Zone can write your completed workouts and the recorded data you select to Apple Health: heart rate, estimated active energy, distance and GPS route, when system permissions allow. Strap Zone never imports health data from other apps.

Optional GPS + TCX Export
Record route, distance, pace splits, and export a complete TCX file for platforms like Strava, Garmin Connect, and TrainingPeaks. GPS can be turned off anytime in Settings.

Large, Clear Display
Big BPM numbers easy to read during any workout — on the treadmill, bike, or gym floor.

WORKS WITH ANY BLE CHEST STRAP
- Polar H10, H9, OH1
- Garmin HRM-Pro, HRM-Dual, HRM-Run
- Wahoo TICKR, TICKR X, TICKR FIT
- COOSPO, Magene, Scosche, and any Bluetooth 4.0+ HR strap

Compatible watches can also connect when they broadcast heart rate over Bluetooth. Availability varies by model.

SIMPLE BY DESIGN
Optional GPS when you want route export. No account. Just heart rate zones — done right.

Your heart rate and GPS route data stay on your device unless you explicitly enable an export. No account.

Works on iPhone, iPad (with Split Screen support), and Mac with Apple Silicon.

Terms of Service: https://strap-zone.vercel.app/terms.html

## Key features

- Real-time HR Zones (Z1-Z5)
- Zone 2 Training with audio alerts
- Custom structured workouts
- Time-in-Zone tracking
- Workout history and zone breakdowns
- Large, clear BPM display
- Works with any BLE chest strap

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Strap Zone Pro Annual | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Strap Zone Pro Lifetime | $19.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/chest-strap-hr-monitor/id6757886667/reviews.md

### 5/5 — Top.

*2026-08-20*

Muito bom e gratuitos!

### 5/5 — Great app

*2026-06-21*

Fit's very well, not overblown like most of these apps. Developer instantly made a nice change on request, appreciate that ❤️

### 1/5 — Stopped working

*2026-06-19*

I had used the free version for a month or so and I liked it enough to buy it. 
It no longer connects to Bluetooth and thinks Bluetooth is not enabled, even though all my other Bluetooth devices work just fine.  So now completely useless to me.
PS tried all the usual, downloading again, rebooting iphone etc.

**Developer response:** Hey, thanks for reporting the issue. Fix is already live. Sorry for the hassle.

### 5/5 — God bless u

*2026-05-05*

Thanks❤️❤️❤️

**Developer response:** Thanks a lot! ❤️  If there's anything you'd love to see added, please let me know - user feedback is super important! :)

### 5/5 — Free

*2026-04-13*

Works great. All you need to monitor your heart rate for free!

### 5/5 — Gorgeous! With room to grow

*2026-03-08*

First things first: Thanks a lot for creating this app. I hope you will continue your development!  

What I love about the app right from the start, it is easy to use and no cloud and it perfectly does what I was looking for, in addition to the 2 mentioned:
- Usage of my chest strap
- audio signal when out of zone
- No watch necessary

What I liked during usage:
- repeated audio signal if still out of zone

What I noticed during running, and previoudly had not been looking for:

- different sound when getting back in the zone

- volume control, sound was a bit too low for me. I'm listening to music during running and in comparisson, it could use some more power

- zone control w/o any timelimit. e.g Endurance - giving me a timelimit puts me under pressure ;-)

Some nice to have in the future:
- record bpm and gps for export or usage with open street map.

**Developer response:** Thank you for the detailed feedback - it really helps a lot!

Great news: your suggestions are now implemented in v3.7.0.

1. Volume control - tap the volume icon during your workout to adjust alert
loudness. Your music will also automatically duck when an alert plays so it
cuts through better.

2. Back-in-zone sound - glad you noticed the concept! We've now added a
distinct success sound when you return to your target zone.

3. Zone training without time limits - you can now pick a target zone (e.g.
Endurance) when starting a Free Session. Full zone alerts, no timer, no
pressure!

GPS/BPM export is noted for the future. For now, I want to keep the app simple and avoid adding too many permissions (like GPS). Thanks again - enjoy your runs!

## Frequently asked questions about Chest Strap HR Monitor

### Does Chest Strap HR Monitor have ads?

No, Chest Strap HR Monitor is ad-free. The app is designed for a distraction-free training experience, focusing solely on heart rate zone monitoring.

### What devices does Chest Strap HR Monitor work on?

Chest Strap HR Monitor is available for iPhone, iPad, and Mac with Apple Silicon. It supports Split Screen on iPad for enhanced multitasking during workouts.

### How accurate are chest straps compared to wrist monitors?

Chest straps are reported to be 99.6% accurate, offering significantly more reliability than wrist-based monitors for heart rate data.

### Can I create custom workouts with Chest Strap HR Monitor?

Yes, you can build custom interval workouts with target zones, repeat blocks, and timed segments. This feature is ideal for HIIT, threshold training, or guided zone 2 sessions.

### Does Chest Strap HR Monitor require a subscription?

No, Chest Strap HR Monitor does not require a subscription. It is a free application with no accounts or cloud services needed, offering a straightforward experience.

### What heart rate zones does Chest Strap HR Monitor display?

The app displays real-time heart rate zones from Z1 (Recovery) to Z5 (VO2 Max), with a bold, color-coded display for easy readability during exercise.

### How often is Chest Strap HR Monitor updated?

The latest version, 3.19.4, was released on June 2, 2026, indicating recent development activity. Users can expect ongoing support and potential updates.

### Is my heart rate data collected by Chest Strap HR Monitor?

No, your heart rate data never leaves your device. The app prioritizes user privacy with no data collection or tracking involved.

## Version history (last 5 releases)

### 3.20.14 — 2026-08-30

Distance is now hidden for weightlifting and other workouts where it is not relevant.

### 3.20.13 — 2026-08-20

Updated App Store presentation.

### 3.20.12 — 2026-08-19

Updated App Store presentation.

### 3.20.11 — 2026-08-06

Strap Zone has a fresh new app icon and refreshed App Store visuals. Your heart-rate zone training experience works just as before.

### 3.20.10 — 2026-08-01

Workout voice alerts are now more flexible—and Strap Zone Pro is complimentary for users whose App Store storefront is Russia while purchases remain unavailable there.

NEW
• Set low and high heart-rate limits and hear an alert after crossing them.
• Users on the Russian App Store storefront receive permanent Pro access at no charge.

IMPROVED
• Adjust limits with larger controls or exact BPM entry, and preview each alert from Settings.
• Choose distance and pace updates every 0.5, 1, 2, or 5 km/mi.
• Hear your current heart rate every 30 seconds, 1, 2, or 5 minutes.
• Alert priority keeps important workout guidance clear.

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## More apps by Wojciech Zieba

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All apps by Wojciech Zieba: https://appshunter.io/developer/1853276764

## Related topics

[strap zone](https://appshunter.io/ios/topics/strap-zone) · [chest strap hr monitor](https://appshunter.io/ios/topics/chest-strap-hr-monitor)

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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 2026-08-30.*