New in 2.0: your Fitness Age, an Apple Watch app, and Coach to talk your numbers through. No ads, no tracking, no account.
Your VO2 max, explained. Your Fitness Age, your trend, and a coach to talk it through.
VO2 max Hero reads the cardio fitness estimate your Apple Watch saves to Apple Health and turns it into something you can act on: where you stand for your age, which way you're heading, and what moves it.
FREE
• Your latest VO2 max, the 30-day change and a 90-day chart
• Why it moved: the outdoor walk, run or hike behind each new reading
• Fitness Age: the age whose typical cardio fitness matches yours
• Your best reading and your 30-day progress
• An Apple Watch app with complications
• Home Screen and Lock Screen widgets
• A note when a new reading lands
PRO
• Coach: ask about your numbers and get a short, plain answer, then follow up in the same thread
• Monday brief: last week in one card
• Your rank among people your age and sex, and how far your next Fitness Age is
• Your full history, year over year, and your pace
• Four more hero styles and four more colors
Pro is a monthly or yearly subscription, with a 7-day free trial for new subscribers. Coach has a fair-use daily limit.
HOW READINGS WORK
Apple Watch (Series 3 or later) estimates VO2 max during outdoor walks, runs and hikes recorded in the Workout app. Indoor workouts don't add readings. No Watch? Any VO2 max already in Apple Health still works.
PRIVATE BY DESIGN
No ads. No tracking. No account. Your Health data stays on your iPhone unless you ask Coach a question. Coach sends only the numbers it needs to a third-party AI service, and only after you allow it. You can turn that off in Settings at any time.
Fitness Age compares your VO2 max with published treadmill norms for your sex (the FRIEND registry). VO2 max Hero gives general fitness guidance. It is not a medical device and doesn't diagnose or treat anything.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://negovskiy.github.io/VO2max-agreement/
4.18.2023 update: server now returns a 404 error. You’ve been warned. ///Haven’t been near the app for several days per illness. Opened it today. Greeted with *free 1-per-hour-rate exceeded* declaration, then shut down. Until the dev gets it together → deleted. Too many competitors in this niche to stomach blatant triflingness. BTW, wanna charge a reasonable flat one-time fee, fine. Sub, not at any price given your history.
Developer Response
You were right, and we're sorry the app treated you like that. The hourly limit and the 404 are gone: the free tier now includes one AI insight a week, and your VO₂ max history, Home screen and widget stay free. We'd be glad to have you back if you give it another try.
A new welcome for new users and a livelier Coach, plus fixes.
• New welcome: your history plots itself, then your VO2 max and your Fitness Age
• Coach answers arrive word by word
• Coach notices when your VO2 max has leveled off, and how old the reading behind your Fitness Age is
• Coach looks at your last 30 days by default
• Notifications switch language when you change it in Settings
• Widgets: the 90-day chart ends today, like Home, and the Fitness Age row no longer wraps
• Apple Watch: the Fitness Age row fits on every watch size
• Wording fixes in French, German and on iPad
Version 2.0.1
The developer, Andrey Negovskiy, 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 Linked to You
The following data may be collected and linked to your identity:
Health & Fitness
Purchases
Location
User Content
Identifiers
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Andrey Negovskiy
Size
55.1 MB
Category
Health & Fitness
Compatibility
Requires iOS 18.4 or later.
iPhone Requires iOS 18.4 or later.
iPad Requires iPadOS 18.4 or later.
Mac Requires macOS 15.4 or later and a Mac with Apple M1 chip or later.