Your walking over time, from the devices you already carry.

One test is a snapshot. Your phone, your watch and your own timed walks together show the direction. This page puts them on one screen, week by week, and picks one next step. It reads the files on this device; nothing is uploaded and there is no account.

HealthGait walking summary. A screening record kept by the person, not a diagnosis.

Your one next step

Start with one timed walk. It takes a minute and is kept on this phone.

Time a walk

Add what your devices already recorded

Choose one or more files. Each is read here, on this device, and never sent anywhere. The files are not kept: choose them again next time. Your HealthGait walks, sit-to-stand counts and life-space answers are already here if you kept them on this phone.

iPhone and Apple Watch: Health app › your picture › Export All Health Data › save export.zip. Gives walking speed, steadiness, step length, double support, asymmetry, steps, and from the Watch a six-minute walk estimate and walking heart rate.
Android (Google Fit): takeout.google.com › Fit › the file Daily activity metrics.csv. Gives steps per day.
Fitbit: your Fitbit data export › the steps-….json files. Garmin: Garmin Connect data export › the UDSFile_….json files. Steps per day.
Anything else: a CSV with a date column and a steps column.

Get care promptly, do not wait for a trend: a sudden change in how someone walks, new weakness or numbness on one side, chest pain, fainting, or a fall with injury. Call 911 in an emergency.

How this is worked out, and how far to trust each number

Weeks, not days. Each day's value is rolled into its week (Monday to Sunday). The tile shows the week's median, so one unusual day does not move it. A week counts only with 3 or more days of data.
The direction. A straight line through the counted weeks of the last 12, shown when 8 or more weeks count. A speed day counts only with 3 or more iPhone samples.
How big a change has to be. One person's everyday iPhone speed can drift about 0.14 m/s from measurement alone (Apple, 2022). So the dashboard says "possibly slower" from 0.10 m/s when the line's 95% range stays clear of zero, and "likely" from 0.14 m/s. For timed walks it uses Perera et al. (2006): 0.05 m/s small, 0.10 m/s substantial.
Everyday speed is not clinic speed. The iPhone measures your ordinary walking with the phone in a pocket or bag; a timed 4-metre walk measures one deliberate walk. Everyday speed runs about 0.22 m/s below lab speed on average (meta-analysis, Gait & Posture 2026), so the dashboard keeps them as two tiles and never mixes them. The 0.8 m/s review line (BC Guidelines 2017) is for the timed walk only.
Steps. An iPhone and an Apple Watch both count the same walk. Each day keeps the larger count, never the sum, and steps from several exports are merged the same way. Wrist and phone step counts run low at slow, shuffling paces and with a walker or cane (in one study of older adults, wrist trackers missed about 45% of steps at 1 km/h).
Step length, double support, asymmetry, walking heart rate, six-minute walk estimate. Shown as direction and size only. No published cutoff for these everyday-device numbers is used here. Asymmetry moves with where the phone is carried and the ground underfoot.
Walking Steadiness. Apple's own score and its Low or Very Low alerts, shown as Apple reports them. No independent published test of how well it predicts falls was found; an alert leads to the fall-risk checklist, not a verdict.
Not measured here: AirPods can sense head movement only inside a native iPhone app, which a web page cannot reach.
Life-space. The Life-Space Assessment (Baker, Bodner and Allman, J Am Geriatr Soc 2003): how far from home you went in the past four weeks, how often, and with how much help. 0 to 120; higher means getting further, more often, more on your own.
Every source is listed on where the numbers come from. This is a screening record kept by the person, not a diagnosis; your clinician decides what it means.