ZoneMax: VO₂ Max Optimizer
HR Zones, VO₂ Max & Recovery
$9.99 · Designed for iPhone. Not verified for macOS.
Know your zones. Track your VO₂ Max. Score your recovery. All from your Apple Watch — one-time purchase, no subscription.
ZoneMax turns your Apple Watch workout data into clear, actionable fitness insights — no subscription, no account, no data leaving your device.
HEART RATE ZONE BREAKDOWN
See exactly how much time you spend in each heart rate zone for every workout. Visualize your training intensity with an Activity Ring-style display.
VO₂ MAX TRENDS
Track your cardiorespiratory fitness over time with interactive charts. See how you rank against age and sex-adjusted benchmarks.
DAILY RECOVERY SCORE
A composite score built from your HRV, resting heart rate, sleep, and training load — so you know when to push hard and when to rest.
BUILT FOR PRIVACY
Zero data collection. Zero analytics. Everything stays on your device.
Requires Apple Watch and HealthKit data.
Ratings & Reviews
The developer, Pleiades Labs LLC, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Pleiades Labs LLC
- Size
- 8.2 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 7 more
- English, French, German, Italian, Japanese, Portuguese, Simplified Chinese, Spanish
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Pleiades Labs LLC
