# Zone 2: Heart Rate Trainer

> Longevity Score & AI coaching

Canonical page: [https://chrome-stats.com/d/id6762046665](https://chrome-stats.com/d/id6762046665)

## Overview

- **ID:** `id6762046665`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Jung Soon Shin
- **Category:** Health & Fitness
- **Version:** 2.2.1
- **Last updated:** 2026-09-02
- **First published:** 2026-04-21
- **Size:** 15 MB
- **Data as of:** 2026-09-05
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/zone-2-heart-rate-trainer/id6762046665)
- **Website:** [https://ootssu.com](https://ootssu.com/)
- **Privacy policy:** [https://ootssu.com/zone2/privacy.html](https://ootssu.com/zone2/privacy.html)

## Description

Zone 2 minutes alone don't tell you if you're building a longer life. See one Longevity Score from Zone 2, sleep, VO2 Max and resting heart rate.

Zone 2 training is the science-backed foundation of mitochondrial health, VO2 Max growth, and longevity. But "Zone 2 minutes" alone don't tell
you whether you're actually building a longer healthspan.

Zone 2 Longevity Coach computes a composite Longevity Score (0–100) from four weighted dimensions — Zone 2 minutes (40%), sleep (30%), VO2 Max
(20%), and resting heart rate (10%) — pulled directly from Apple Health. Every week, an AI coach reads your data and produces a personalized
summary plus three recommendations that are deliberately biased toward your weakest dimension, so each action moves your score the most.

WHAT'S INSIDE
• Composite Longevity Score with weighted breakdown across the four pillars
• Personalized Zone 2 heart rate range via the Karvonen method (resting HR + age)
• Weekly AI coaching summary written specifically against your week's data
• 14-day Zone 2 minutes trend chart
• Shareable weekly progress card sized for Instagram Stories
• Pull-to-refresh on every tab

APPLE WATCH
• Standalone watchOS companion shows your week's Zone 2 progress
• Watch complications for circular, rectangular, corner, and inline faces
• Live ring updates against your personalized HR range, not a generic estimate

HOME & LOCK SCREEN WIDGETS
• Small home widget with weekly progress ring + today's minutes
• Lock Screen rectangular, circular, and inline widgets
• Refreshed hourly from the App Group

PREMIUM
• 7-day free trial — no charge during the trial, cancel anytime
• Reminders 2 days and 1 day before renewal so you choose with intent
• Weekly AI coaching, full longevity score breakdown, trend charts, share cards
• Monthly or annual subscription

PRIVACY
• Health data is read directly from Apple Health on your device
• No third-party analytics or ad SDKs
• Account + all server-side data deletable from Settings

This app is not a medical device. It does not diagnose, treat, or prevent any condition. Consult your physician before changing your training
routine.
Privacy Policy: https://ootssu.com/zone2/privacy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Rankings

- #1,304,441 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6762046665)