# Zone 2: Heart Rate Training

> VO2 Max, Cardio & HR Zones

Canonical page: [https://chrome-stats.com/d/id6444690892](https://chrome-stats.com/d/id6444690892)

## Overview

- **ID:** `id6444690892`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Shannon Bolick
- **Category:** Health & Fitness
- **Rating:** 4.60 / 5 (241 ratings)
- **Version:** 5.0.3
- **Last updated:** 2026-09-10
- **First published:** 2023-02-22
- **Size:** 15 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/zone-2-heart-rate-training/id6444690892)
- **Website:** [https://z2heartratetraining.com](https://z2heartratetraining.com/)
- **Privacy policy:** [https://www.freeprivacypolicy.com/live/ca9d43e3-ee7f-4fd0-9098-e0a7401b0bc6](https://www.freeprivacypolicy.com/live/ca9d43e3-ee7f-4fd0-9098-e0a7401b0bc6)

## Description

**Zone 2: Heart Rate Training** helps you monitor time spent in the Zone 2 heart rate range, typically 60–70% of maximum heart rate. Set weekly or open workout goals, track daily, monthly, and weekly progress, and use charts to build consistent aerobic training habits.

Use Apple Watch for live heart rate zones, haptic feedback, Siri announcements, workout screens, and iPhone mirroring. The app also supports Bluetooth heart rate monitors, Live Activities, Home Screen and Lock Screen widgets, Strava connectivity, audio feedback, and heart rate zone calculations.

## Rankings

- #97,614 — Overall

## Review summary

Zone 2: Heart Rate Training is a simple, effective tool for real-time zone tracking and time-in-zone goals. Users praise its focused design, customizable zones, and strong support, with reliable alerts and Apple Watch integration. Recurrent drawbacks center on stability and connectivity, including crashes, freezes, and monitor disconnections, though developers often resolve issues quickly.

### Pros

- Real-time zone tracking during workouts with on-screen zone display and per-zone time, plus weekly progress.
- Simple, focused interface that emphasizes zone tracking without extraneous metrics.
- Customizable heart-rate zones and broad compatibility with HR monitors, Apple Health, and Apple Watch.
- Excellent developer support and responsiveness, with quick fixes and feature requests implemented.
- Reliable in-workout alerts/notifications when crossing zones, including voice alerts on Apple Watch.

### Cons

- Stability issues: crashes, freezes, and workouts not saving (disrupting sessions).
- Connectivity/disconnection with heart-rate monitors and devices (Apple Watch, Polar, etc.).
- Occasional update/compatibility issues on certain devices or OS versions.

## Similar extensions and apps

- [Zone2 — Heart Rate Zones](https://chrome-stats.com/d/id6775402534)
- [Zone 2 – Heart Rate Trainer](https://chrome-stats.com/d/id6761515338)
- [Zone 2 Training Coach](https://chrome-stats.com/d/id6762536918)
- [Zone2 Pulse](https://chrome-stats.com/d/id6759531935)
- [Zones for Training](https://chrome-stats.com/d/id1139688415) — 4.80 / 5
- [Zone 2 - Fat loss & Endurance](https://chrome-stats.com/d/id6749857232)
- [Zone 2 Training App](https://chrome-stats.com/d/id6776123744)
- [Cardio Zones.](https://chrome-stats.com/d/id1103232564) — 4.30 / 5
- [Chest Strap HR Monitor](https://chrome-stats.com/d/id6757886667) — 4.30 / 5
- [Zone2 Fitness](https://chrome-stats.com/d/id6444166065) — 3.70 / 5
- [Heart Rate Zones: Underdog](https://chrome-stats.com/d/id6758392759)
- [HR Zone Monitor](https://chrome-stats.com/d/id6759027810)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6444690892)