How well you move and think, measured over time

Your phone can measure how well you move and think.

No wearable. No blood draw. No clinic. A short walk and a couple of minutes of sitting turn the sensors you already carry into a picture of how you move and think — compared with people your age, and tracked over time.

Download on the App StoreGet it on Google Play
Free on iPhone and Android. No trial, no card.
The footing app's home screen: the Personal Lens radar and Mobility Age

What it measures

Twelve dimensions, across movement and thinking.

Most health measurement looks at inputs — what’s in your blood, how you slept. footing measures output: what your body and mind can actually do, and whether that’s holding, improving, or slipping.

Mobility

Six dimensions
  • Pace

    How fast you walk.

  • Stride

    How long your steps are.

  • Cadence

    How many steps you take a minute.

  • Steadiness

    How alike your steps are, one to the next.

  • Regularity

    How evenly your stride repeats.

  • Turn

    How long you take to turn around.

Cognitive

Six dimensions
  • Reaction

    How quickly you respond.

  • Precision

    How often you get it right.

  • Attention

    How steady your focus stays from one answer to the next.

  • Memory

    How long a sequence you can hold in mind.

  • Timing

    How steady a rhythm you can keep.

  • Fluency

    How quickly you type a short phrase.

How it works

Three beats. Then it just keeps going.

Take a walk

Put the phone in your pocket and walk the way you normally walk. That’s the measurement — no treadmill, no lab, nothing to strap on.

About three minutes

Sit down for two minutes

A short set of tap-and-recall tasks. Movement alone can’t tell you how you’re thinking, so we ask for both before we tell you anything.

About two minutes

See where you stand

From your very first walk, see how each part of how you move compares with people your age. After a few walks, your readings become a Mobility Age and a Cognitive Age — and you can watch them over time.

Then check back every few days

One reading is a starting point. The trajectory is the actual signal — which is why footing is built to be opened for years, not finished in a week.

The evidence

At 45, the slowest walkers had been aging five years faster.

5.0 years

In a New Zealand birth cohort followed for five decades, 904 adults had their walking measured at age 45. Those in the slowest fifth had been aging — across nineteen biomarkers spanning multiple organ systems — about five years faster since their twenties than those in the fastest fifth.

Found in adults measured at age 45 — a population finding, not a prediction about any individual

Rasmussen et al., JAMA Network Open, 2019 · one of four studies, each with its population stated.

What it costs

The measurement is free. Forever.

Every dimension we measure, your Mobility Age and Cognitive Age, and your full history — free, with no trial clock on them. Later, we'll offer optional programs built on the same measurement.

The rules we build by

Published, so you can hold us to them.

  • A number never appears without context.

    An age with no explanation isn't information, it's anxiety. Every number in footing arrives with what it means and what to do next.

  • No fear marketing.

    Falls and dementia research is why we’re rigorous — it is not a scare tactic, and we won’t use it as one.

  • No woo.

    No frequencies, no energy, no destiny. Every claim we make points at a study you can go read.

  • Never a leaderboard.

    Comparison is opt-in and private. Your measurement is yours, and nobody else sees it unless you decide to show them.

See where you stand.

You don’t get one measurement of how you’re aging. You get a line — and a line can be changed.

Launching this fall