VO2 Max - Active and Fit

Active And Fit: VO₂ Max Health-Span Tracker

Add years to your life—and life to your years.

Why VO₂ max?

After age 50, aerobic capacity is one of the strongest predictors of independence. A higher VO₂ max means easier walks, safer stairs, and more adventures with grand-kids. Active And Fit turns lab-grade science into two simple walking tests you can do anywhere—then shows how your “engine” is aging (or getting younger!) week by week.

Radical privacy, zero cloud

We believe health data should stay yours. Active And Fit collects nothing beyond what you enter. No account. No tracking. Want a backup? Export the database to Files and tuck it away. Restore will come in v1.1, but only if we can keep it 100 % user-controlled.

Feel stronger, live longer.

Download Active And Fit today and start tracking the single metric that predicts healthy years ahead—securely and on your terms.

DISCLAIMER: Please be reminded to seek a doctor’s advice in addition to using this app and before making any medical decisions. We are not responsible for any physical harms or injuries that user's of this might suffer.