๐Ÿพ GAITKEEPER

DOG GAIT SCREENER ยท PHONE-OVER-THE-WITHERS
This is a screening & tracking tool โ€” not a diagnosis. Hip dysplasia, arthritis, and lameness are diagnosed by a veterinarian (exam + X-rays). GAITKEEPER watches your dog's stride rhythm & left/right symmetry over time so you can catch a change early and decide when to book a vet. One reading is noisy โ€” the trend is what matters.
How to capture:
  1. Tuck the phone in a harness pocket over the withers (shoulders), snug, screen out.
  2. Pick flat, level ground and a straight ~30 m line.
  3. Walk your dog at a steady trot โ€” even pace, loose leash.
  4. Tap start, then move. It records 30 seconds.
  5. Same pace & route each time โ†’ cleaner trends.
30
cadence โ€“ strides/min ยท keep trotting
โ€“
โ€“
Symmetry (L/R)
100 = even
โ€“
Rhythm / regularity
100 = steady
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Cadence
strides/min
โ€“
Vigor
relative

Trend โ€” your dog

Stored only on this phone. Conditions (pace, ground, mount) change the numbers โ€” compare like with like, and watch the direction over weeks, not a single score.
Built with the phone's motion sensors (accelerometer + gyroscope) via standard web APIs. Method: autocorrelation of trunk acceleration โ€” the same family of math used in veterinary & human gait studies. Screening only.