Short

Step Doctor Is Out on iPhone and Android

Gait analysis, the iTUG and the SPPB on one phone, with voice guidance, 3D replays and PDF reports. Now on iPhone and Android.

By Hector Andres Acosta Pozo 1 min read

Step Doctor Is Out on iPhone and Android

Step Doctor is fully released on iPhone and Android, in English and Korean.

The short version

  • Three standard tests on one phone: gait analysis, the instrumented Timed Up and Go and the SPPB.
  • Hands-free: voice guidance takes you through each test, so you can record yourself.
  • Every result comes with a 3D replay, a PDF report, an AI coach and exercises picked for what needs the most work.
  • Free to download; each test uses credits, and new accounts get welcome credits.
Three Step Doctor result screens: gait analysis, Timed Up and Go and SPPB
Gait analysis, the iTUG and the SPPB in Step Doctor.

App Store · Google Play · Read the full announcement →

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Is Gait Analysis From a Phone Accurate? How Validation Works, and What Studies Show

How gait measurement is validated (reference systems, ICC, Bland–Altman limits of agreement, meaningful change), what published studies of camera and phone tools found, and six questions to ask of any app's evidence.

The Timed Up and Go (TUG) Test: Normal Times by Age and the Six Phases

How to do the Timed Up and Go test, average times by age (8.1, 9.2 and 11.3 s), what the 12 s and 13.5 s cut-offs mean, and why the instrumented TUG times six phases.

Step Doctor Is Out: Gait Analysis, iTUG and SPPB on One Phone

Step Doctor is fully released on iPhone and Android in English and Korean: gait analysis, the instrumented Timed Up and Go and the SPPB, run and scored from one phone video.

All guides

Get Step Doctor

Free to download on iPhone and Android. Each test uses credits, and new accounts get welcome credits.

Get it on Google Play Download on the App Store