The odometer for your body

Your body keeps its own age.

Mileage estimates your body age in about 60 seconds, from a few quick tests plus your Apple Health. No account, and nothing you measure ever leaves your phone.

Download on the App Store First test free · iPhone, iOS 18+
60 seconds away
Biological age
24
6 years younger
Younger than 68% of 30-year-olds
205080
~60s
One test, start to number
4
Body systems, one score
0
Bytes of your data uploaded
iPhone
No clinic, no blood test
Four systems, one number

Your iPhone is already a diagnostic panel.

Mileage runs three quick tests on your iPhone and reads what Apple Health already knows, then combines them into a single body-age estimate. No cuff, no clinic, no blood test.

01
Reaction time
A tap test measures how fast your nervous system responds.
02
Tap speed
Rapid tapping gauges motor output and fine control.
03
Balance
A one-leg hold uses motion sensors to read stability.
04
Heart & recovery
Reads VO₂max, resting heart rate and recovery signals from Apple Health, read-only and never written back.
See what's driving your number

Not just a score. A full read of the machine.

Mileage breaks your body age down by system, so the number means something. See where you're ahead of your age, and where the wear is showing.

  • ✓
    Cardio, neural, motor & recoveryA per-system breakdown behind the single number.
  • ✓
    Trend over timeRetest and watch your body age move, up or down.
  • ✓
    A weekly maintenance planThree simple actions. Maintenance, not punishment.
Mileage result screen showing a body age of 24 with a per-system breakdown
Actual in-app result screen
Private by design

Nothing you measure leaves your iPhone.

No servers. No account. No analytics, no ads, no tracking. Your taps, motion readings and Health data are processed entirely on-device. The only network call in the whole app is to manage your subscription.

0 trackers 0 accounts HealthKit read-only Scored on-device
Mileage share card in a 9:16 story format
Share card, Story 9:16 & Feed 4:5
One number worth sharing

A card built for the feed, not the clinic.

Your result becomes a clean share card in Story and Feed formats: the mesh, your number, and the scale. No body imagery, no weight, no shame.

  • ✓
    Story & Feed formatsTwo real compositions, sized for Instagram, TikTok and Reels.
  • ✓
    Hide your real ageOne toggle shares the result without revealing your age.
Membership

Your number is free. The maintenance isn't.

Your first test and body-age number stay visible forever. Membership adds the plan that moves it: the system breakdown, trend over time, a weekly service list, and retests anytime.

✓System-by-system breakdown
✓Weekly maintenance plan
✓Trend over months
✓Retest anytime
✓Shareable score cards
BEST VALUE · 3-DAY FREE TRIAL $39.99 / year Just $0.77 a week · billed annually
$6.99 / week Cancel anytime
Get Mileage

Prices shown in USD and may vary by region. Subscriptions are billed through your Apple ID and managed in iPhone Settings.

Questions

Good to know.

How does the body-age test work?+
Mileage runs three quick tests on your iPhone: reaction time, tap speed and a one-leg balance hold. It also reads cardio and recovery signals (VO₂max, resting heart rate) from Apple Health. Those become four systems: cardio, neural, motor and recovery, and together they make a single body-age estimate with a per-system breakdown.
Is my data really private?+
Yes. Every measurement is processed on your device and never uploaded. There are no servers, no account, and no analytics. The only network connection in the app is to your subscription provider to manage your purchase.
Do I need an Apple Watch or any wearable?+
No. The reaction, tap and balance tests run on an iPhone with iOS 18 or later, with no internet connection needed. If your Apple Health already has VO₂max or resting heart rate, usually written by an Apple Watch, Mileage folds those in for the cardio and recovery read. Without them, your number is based on the neural and motor systems, and the app tells you so instead of guessing.
Is this a medical diagnosis?+
No. Mileage is a wellness estimate that measures wear, not a medical diagnosis or medical advice. If you have health concerns, talk to a qualified professional.
What's free and what's paid?+
Your first test and your main body-age number are always free and never blurred. Mileage Premium unlocks the full system breakdown, trend history, unlimited retests, and a weekly maintenance plan.
How do I manage or cancel my subscription?+
Subscriptions are handled by Apple. On your iPhone, open Settings → [your name] → Subscriptions, select Mileage, and change or cancel there.
Ready?

How old is your body, really?

Find out in about 60 seconds. Free first test.

Download on the App Store