VO2 Max Daily Tracker app icon

Apple Health cardio fitness estimates

VO2 Max Daily Tracker

A private, focused way to understand your cardio fitness trend, right from the Apple Health data you already have.

Make the trend easier to see.

VO2 Max Daily Tracker reads Apple Health's cardio fitness estimates and turns scattered measurements into a calm, readable view. See your history, set a personal target range, and notice whether your recent trend is improving, stable, or declining.

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Trend at a glance

See recent cardio fitness movement without digging through a long health timeline.

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Personal target range

Choose a range that gives your measurements useful context instead of chasing a universal score.

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iPhone, Watch, widgets

Keep your latest estimate and trend close by with the iPhone app, Apple Watch, and widgets.

A note about the data: VO2 Max Daily Tracker displays Apple Health estimates. It is a wellness tracking tool, not a medical device, and does not diagnose, treat, or predict health outcomes. If you have questions about your health, talk with a qualified clinician.