# Zone 2 AI: Vo2 Max & Endurance

> Heart Rate Zones & Fitness Age

Canonical page: [https://chrome-stats.com/d/id6742467259](https://chrome-stats.com/d/id6742467259)

## Overview

- **ID:** `id6742467259`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Unbounded Technologies LLC
- **Category:** Health & Fitness
- **Rating:** 4.50 / 5 (128 ratings)
- **Version:** 2.6.1
- **Last updated:** 2026-09-19
- **First published:** 2025-03-16
- **Size:** 86 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/zone-2-ai-vo2-max-endurance/id6742467259)
- **Privacy policy:** [https://www.zone2ai.com/privacy-policy](https://www.zone2ai.com/privacy-policy)

## Description

**Zone2AI** is a precision training app for building endurance, improving VO₂ Max, and supporting long-term health. It analyzes Apple Health workout data to validate true Zone 2 sessions, creates personalized weekly prescriptions, and tracks progress toward a 180–240 minute weekly benchmark.

Use Apple Watch haptics to stay in your target heart rate range, unlock guided Norwegian 4x4 HIIT workouts, and monitor your Zone2AI Power Score, fitness age, predicted VO₂ Max, and future training trajectory. With support for Apple Watch, Polar, Garmin, Strava, and WHOOP through Apple Health, Zone2AI provides private, data-driven insights without ads or selling personal data.

## Rankings

- #125,003 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6742467259)