OxyScore: VO2max & Fitness Age
Tests, intervals, strength log
About
Measure and train your VO2max and strength to improve longevity. Track fitness age, heart rate recovery, and log strength training progress. Features guided workouts and adaptive weekly planning.
What's New in OxyScore
1.2
September 7, 2026
A Strength tab: keep your own list of exercises, log reps and weight, and see your last session's top set, whether it moved, and your estimated max. The Dashboard carries the exercise at the top of your Strength list, beside your VO2max.
MoreSubscription plans
OxyScore Yearly
Full access to measurement, coaching, and progress.
Developer apps
FAQ
What is OxyScore's primary focus?
OxyScore focuses on measuring and training VO2max and strength, two key metrics linked to longevity. It provides fitness age, workout logs, and progress tracking.
How does OxyScore measure VO2max?
OxyScore offers three guided field tests: Cooper, Rockport walk, and an indoor max effort test. The app displays the accuracy range and the scientific study behind each measurement.
Can I train my VO2max with OxyScore?
Yes, OxyScore provides five cited training protocols coached live on your Apple Watch with haptic cues, including Norwegian 4x4 and Zone 2 training.
How does OxyScore handle strength training?
You can maintain a personal exercise list and log your reps and weight for each exercise. The app shows your last session's top set, estimated max, and progress to help you beat previous records.
What subscription plans are available for OxyScore?
OxyScore offers a monthly subscription for $4.99 with a 7-day free trial, and a yearly subscription for $29.99 with a 14-day free trial. Subscriptions renew automatically unless canceled.
Is OxyScore available on multiple devices?
OxyScore is designed for iPhone and Apple Watch. Guided sessions specifically require an Apple Watch, while data and planning are visible on supported iPhones.
How does OxyScore ensure user privacy?
OxyScore is designed for privacy, with all health data computed on-device and never leaving your devices. It does not require accounts, tracking, or analytics, and workouts save back to Apple Health.
What is the age rating for OxyScore?
OxyScore has an age rating of 17+. Users are advised to consult a physician before beginning vigorous exercise.