# HRZones Heart Rate Calculator

> HRZones Heart Rate Calculator (iPhone/iPad app by 26 Branding Agency Inc..)

- Source: https://appshunter.io/ios/app/hrzones-heart-rate-calculator/id6772956643 (this page in markdown: same URL + `.md`)
- Developer: [26 Branding Agency Inc.](https://appshunter.io/developer/1796514891)
- Category: Health & Fitness
- Price: $2.99
- Age rating: 4+
- Requires: iOS 15.1 · 32 MB
- Languages: English
- Released: 2026-05-29
- Data updated: 2026-07-09
- User reviews in markdown: https://appshunter.io/ios/app/hrzones-heart-rate-calculator/id6772956643/reviews.md

## What is HRZones Heart Rate Calculator?

HRZones computes your 5 training zones using the Karvonen formula and sport-specific Tanaka HRmax estimates (running, cycling, swimming, or generic 220-age).


## Version history (last 2 releases)

### 1.0.2 — 2026-06-29

Updated app information and search tags.

### 1.0 — 2026-05-29

No release notes.

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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 2026-07-09.*