# HR Zones — Train with heart-rate zones

> Heart rate training zone calculator for personalized fitness optimization. (iPhone/iPad app by Joao Frasco.)

- Source: https://appshunter.io/ios/app/hr-zones/id1412520667 (this page in markdown: same URL + `.md`)
- Developer: [Joao Frasco](https://appshunter.io/developer/1105081507)
- Category: Sports, Utilities
- Price: $0.99
- Rating: 3.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.6 · 11 MB
- Languages: American English
- Released: 2018-07-28
- Data updated: 2026-10-12
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hr-zones/id1412520667/reviews.md

## What is HR Zones?

Heart Rate Zones – Calculate Your Training Zones

HR Zones helps you calculate personalized heart rate training zones and put them to work. Guided first-run setup captures your profile, then the app shows five science-based zones with Age, Max HR, and BPM ranges at a glance.

Train smarter with goal-based recommendations, a time-in-zone planner, and a multi-segment zone timer. Share your zones as text or an image. Support multiple profiles for family or clients—all data stays on device.

Key Features:
• First-run onboarding with privacy & health disclaimer
• Multiple max-HR formulas (Standard, Tanaka, Gulati, Custom)
• Gender recommendations and optional Karvonen formula
• Multi-profile support with calculation history
• Train tab: goals, time-in-zone planner, zone timer
• Optional Apple Health: resting HR + workout zone analysis (on device)
• Private Coach: on-device Apple Intelligence tips when available, offline tips otherwise
• Home Screen & Lock Screen widgets for your zones
• Siri/Shortcuts: ask for a zone’s BPM range
• Live Activity countdown while a zone timer runs
• Goal highlights on zone cards
• Share zones as text or image
• Modern materials UI, haptics, light & dark mode
• No account required—preferences stay on your device

Included vs. Pro:
The five-zone calculator, every formula, Karvonen, one profile, widgets, Help, and share-as-text are included with the app. HR Zones Pro (optional one-time in-app purchase, no subscription) adds extra profiles, history export, the Train tools (goals, planner, zone timer), Health workout analysis, and the Private Coach.

How It Works:
1. Complete onboarding and set your date of birth
2. Review Max HR and five training zones
3. Pick a goal on the Train tab
4. Plan session time by zone or start the timer
5. Share your zones or switch profiles as needed

Perfect For:
• Runners and cyclists
• Fitness enthusiasts and coaches
• Multi-athlete households
• Anyone learning zone training

Heart Rate Zones puts transparent, science-based zone training in your pocket with a privacy-first design.

This app is informational only and is not a medical device. Consult a clinician before starting or changing an exercise program.

## Key features

- Multiple heart rate calculation methods
- Personalized five training zones
- Detailed zone information
- Karvonen formula support
- Gender-specific recommendations
- Color-coded zones with icons

## Is HR Zones safe?

Not enough ratings yet to assess HR Zones.

## Is HR Zones legit?

HR Zones appears to be a legitimate app. The AppsHunter Legitimacy Score for HR Zones is 90 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/hr-zones/id1412520667/reviews.md

### 5/5 — Great app thanks to a responsive developer

*2026-01-02*

Was looking for an HR app that would allow me at a glance to see my HR zones, eg, while running on a treadmill. Downloaded this and was disappointed at first. Aesthetically it had a pleasing appearance and good customizability within the settings. BUT, some of the screen was cutoff on my iPhone Mini 13. What was worse was that the way screen elements were rendered, I couldn’t enter my birthdate- making the HR calculation useless. 

I emailed the developer- around New Year’s Eve- and (1) got a response quickly, and (2) he developed a bug fix 2 days after and emailed me to let me know. I just downloaded it and it works perfectly now. Best HR app for my needs, and I’m super impressed with the developer’s support. 

Highly recommended.

## Frequently asked questions about HR Zones

### What is HRZones?

HRZones is a mobile application designed to calculate your personalized heart rate training zones. It uses your personal data and various calculation methods to provide precise BPM ranges for optimal workout guidance.

### How does HRZones calculate training zones?

HRZones calculates training zones using your date of birth and selected calculation method. It can also incorporate your resting heart rate to enable the Karvonen formula for more personalized results.

### What calculation methods does HRZones offer?

HRZones supports multiple calculation methods including Standard (220 - age), Tanaka, Gulati (optimized for women), and a Custom option where you can enter your own maximum heart rate from a stress test.

### Can HRZones be used by women?

Yes, HRZones includes the Gulati formula, which is optimized for women, and allows for gender selection with automatic formula recommendations.

### Does HRZones have ads?

No, HRZones does not contain advertisements. It is a paid application that offers an ad-free experience.

### What devices is HRZones available on?

HRZones is available on iPhone and iPad devices, offering a consistent experience across Apple's mobile platforms.

### How often is HRZones updated?

The latest version of HRZones is 2026.01.01, which was last updated on January 2, 2026. Updates typically focus on improving features and ensuring compatibility.

### What is the price of HRZones?

HRZones is a paid application priced at $0.99. This one-time purchase grants you access to all its features without any recurring fees or in-app purchases.

## Version history (last 5 releases)

### 2026.09.16 — 2026-09-21

HR Zones, rebuilt from the ground up.

• Guided setup, multiple athlete profiles, and calculation history
• New Train tab: goals, a time-in-zone planner, and a multi-segment zone timer with Live Activity
• Optional Apple Health: import resting HR for Karvonen zones and see your workouts in zones — all on device
• Private Coach: educational tips, using on-device Apple Intelligence when available
• Home Screen and Lock Screen widgets, plus Siri & Shortcuts
• Share your zones as text or an image
• Fresh design and new app icon, with VoiceOver and Dynamic Type support
• New: HR Zones Pro, an optional one-time in-app purchase. The zone calculator needs no extra purchase.

### 2026.01.01 — 2026-01-02

Bug fix for smaller screens!

### 2025.12.31 — 2026-01-01

Bug fixes and enhancements!

### 2025.11.04 — 2025-11-05

Enhanced Calculations

• Multiple calculation methods (Standard, Tanaka, Gulati, Custom)
• Gender selection with automatic formula recommendations
• Resting heart rate input enables Karvonen formula
• New Settings screen for easy configuration
• More accurate zones based on your personal profile
• Detailed information about each calculation method
• All preferences saved automatically
• Improved zone calculations accounting for fitness level

Brand new Help ad About view!

### 2025.11.03 — 2025-11-04

Interactive Zones

• Tap any zone to see detailed training information
• Learn specific benefits of each heart rate zone
• Discover example activities and exercises for each zone
• Get training tips and recommendations
• See recommended duration for each zone
• Haptic feedback when tapping zones
• Comprehensive zone information at your fingertips

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## More apps by Joao Frasco

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All apps by Joao Frasco: https://appshunter.io/developer/1105081507

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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 2026-10-12.*