Zone 2: Heart Rate Trainer
Longevity Score & AI coaching
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
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/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Your Longevity Score is now free to see — unlock the full breakdown, weekly AI coaching, and your 14-day trend whenever you're ready.
Thanks for training in Zone 2 with us.
The developer, Jung Soon Shin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Financial Info
- Contact Info
- User Content
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jung Soon Shin
- Size
- 15.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 12 more
- English, Arabic, French, Hindi, Indonesian, Japanese, Korean, Polish, Simplified Chinese, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Zone tracking 2 Annual $29.99
- Zone 2 tracking 2 Monthly $4.99
- Zone 2 Lifetime $49.99
- Copyright
- © Shin
