# Step Doctor: Gait Analysis — TUG, SPPB & Walking Test

> TUG, SPPB & Walking Test (iPhone/iPad app by AICU corp..)

- Source: https://appshunter.io/ios/app/step-doctor-gait-analysis/id6747734817 (this page in markdown: same URL + `.md`)
- Developer: [AICU corp.](https://appshunter.io/developer/1771814373)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 131 MB
- Languages: American English
- Released: 2026-06-30
- Data updated: 2026-10-25

## What is Step Doctor?

Step Doctor turns your phone camera into a walking and balance lab. Record a short video and AI gait analysis measures how you walk, stand up and keep your balance — no sensors, no wearables.

THREE MOBILITY TESTS IN ONE APP

Gait analysis (walking test)
Walk toward the phone and get gait speed, cadence, step length, step time, stance and swing phases, left/right symmetry and a 0-100 gait score.

Timed Up and Go (TUG / iTUG)
The classic stand-up, walk 3 m, turn and sit-down test. Step Doctor times it automatically and splits it into phases — stand up, walk, turn, walk back, sit down — so you see where the time goes.

SPPB (Short Physical Performance Battery)
Balance stances, a gait-speed walk and five chair stands, scored 0-12 on the standard SPPB sheet, plus a balance quality score.

WHAT YOU GET
- 3D replay of every walking test from the video, no face shown
- Trends, calendar and history for gait speed, cadence, balance and TUG time
- Shareable PDF reports for gait, TUG and SPPB
- Ask the AI assistant what your results mean
- Works on Android phones and tablets

WHO IT'S FOR
- Older adults and families keeping an eye on walking, balance and mobility
- Physical therapists, rehab and senior-care teams who run TUG, SPPB and gait tests
- Anyone curious about their walking pattern and steps

Made by AICU. Our quality management system is ISO 13485 certified.

Step Doctor is for informational and wellness purposes only. It does not diagnose, treat or prevent any medical condition. Talk to a qualified healthcare professional about your results.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Starter Pack | $4.99 | one-time |
| Plus Pack | $49.99 | one-time |
| Pro Pack | $14.99 | one-time |


## Is Step Doctor safe?

Not enough ratings yet to assess Step Doctor.

## Is Step Doctor legit?

Step Doctor: Gait Analysis appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Step Doctor is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.73.0 — 2026-10-24

Better test access control.

### 1.70.0 — 2026-10-23

Gated SPPB tests for additional internal testing for specific cohort.

### 1.69.0 — 2026-10-22

What's new in Step Doctor
• New test: SPPB (Short Physical Performance Battery). Balance, gait speed and chair stands, scored out of 12, with guide videos
• Timed Up and Go: new "Turn to sit" phase, every phase graded, and a lap view of your test
• Redesigned gait results and Stats with Typical / Borderline / Outside range labels
• New test chooser with a "How it works" guide
• Steadier setup when someone else holds the phone
• Faster on slow connections
• New app icon and bug fixes

### 1.54.0 — 2026-10-21

New: Timed Up and Go (TUG) test. A hands-free balance and mobility test with voice guidance, timed phases, a 3D replay and a PDF report.
Ask AI about your results. Chat about your report and get exercise suggestions with videos.
Exercises picked for you at the end of every gait and TUG report.
Redesigned results: a new score header, a 3D walking view with step markers, and clearer metrics.
Easier recording: a full-screen camera, a guided setup for placing the phone, faster analysis, and a 7-second default clip.
New first-run guides with sample results, so you can explore before your first recording.
Credits and subscriptions: plans, pay-as-you-go, auto top-up, referrals and coupons.
Reminders and notifications that open the right screen.
Tablet support, and a refreshed welcome screen, account and settings pages.
Better Korean translations, plus many speed, stability and privacy improvements.

### 1.11.0 — 2026-07-10

We've been busy! Here's what's new since launch:

AI gait assistant

* Chat with the new AI assistant directly from your gait report.
* Get a summary of your gait results, ask follow-up questions, and receive easy-to-understand explanations.
* The AI is for educational purposes only and is not a substitute for professional medical advice.

Improved recording experience

* New full-screen camera view with better positioning guidance.
* Larger capture button and redesigned recording controls with an easier-to-read timer.
* Fixed orientation issues on tablets and when using the front camera.

Faster analysis

* Automatic detection and tracking of the correct person in most recordings.
* Upload progress is now displayed.
* Faster video processing and instant video preview.
* Analysis can now be canceled while in progress.

Redesigned reports

* View PDF reports directly in the app.
* Improved report layout and redesigned results screen.

Improved navigation

* New floating navigation bar on the home screen and tablet layout.

General improvements

* Stability and performance improvements.
* Fixed a memory leak in the 3D pose viewer that could reduce performance during extended use.

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## More apps by AICU corp.

- [게이트스캐너](https://appshunter.io/ios/app/id6736388751)
- [FecalScanner](https://appshunter.io/ios/app/fecalscanner/id6737596551)
- [Stool Care](https://appshunter.io/ios/app/stool-care/id6770863068)

All apps by AICU corp.: https://appshunter.io/developer/1771814373

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-25.*