Zone 2: Heart Rate Trainer

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/