# 운도니 vs Step Doctor

The clearest difference is in-app purchases: 운도니 at none against Step Doctor's 3. Step Doctor's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Step Doctor sells 3 one-off in-app purchases. 운도니 asks for nothing beyond the download.

운도니 ships an update every 3 weeks, Step Doctor every 2 days. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 운도니 | Step Doctor |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 69 MB | 102 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [stretchjoy](https://appshunter.io/developer/1650729424) | [AICU corp.](https://appshunter.io/developer/1771814373) |

## What reviewers say

### 운도니

[App page](https://appshunter.io/ios/app/id6478490423)

This app helps you build healthy habits through small, consistent exercises. It offers personalized stretching routines for your entire body, focusing on areas like the neck, shoulders, knees, and hips. Start your fitness journey with guided video workouts.

**Highlights:** Personalized stretching routines, Video-based workout guidance, Targeted training by goal or body part, Habit building for fitness, Full body stretching

**Features:** macOS Compatibility

**In-app purchases:** none


### Step Doctor

[App page](https://appshunter.io/ios/app/step-doctor-gait-analysis/id6747734817)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

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


## Frequently asked questions

### Is 운도니 free?

운도니 is free to download, with no in-app purchases.

### Is Step Doctor free?

Step Doctor is free to download, with in-app purchases available.

### Do 운도니 or Step Doctor have ads?

Neither 운도니 nor Step Doctor shows ads.

### Which is updated more often, 운도니 or Step Doctor?

운도니 ships an update every 3 weeks, and Step Doctor every 2 days. Most recently, 운도니 was updated on November 4, 2026 and Step Doctor on November 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*