# PotsiApp vs mVOR

The clearest difference is price: mVOR at Free against PotsiApp's $3.99. mVOR also leads on update cadence (every 4 months vs every 20 months). PotsiApp's advantage is device support (4 vs 2) and iOS requirement (15.4 vs 18.0). On ads and in-app purchases there is nothing between them.

mVOR is free to download; PotsiApp costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PotsiApp ships an update every 20 months, mVOR every 4 months. The most recent releases landed on September 20, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | PotsiApp | mVOR |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/potsiapp/id1451461437/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 1 MB | 71 MB |
| Requires iOS | **15.4** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) | [Ubitrix](https://appshunter.io/developer/968691257) |

## What reviewers say

### PotsiApp

[App page](https://appshunter.io/ios/app/potsiapp/id1451461437)

This medical app assists orthopedic surgeons in evaluating spinal deformities by calculating the Posterior Trunk Symmetry Index (POTSI). It uses a non-invasive topographic method with simple back images to assess back symmetry, helping to identify potential scoliosis and monitor deformities objectively.

**Highlights:** Calculates Posterior Trunk Symmetry Index (POTSI), Evaluates back symmetry using topographic method, Non-invasive assessment of spinal deformity, Imports medical images from camera or photos, Marks anatomical points on patient's back, Saves planned images for review, Objective monitoring of spine deformities

**Features:** Vision Pro support

**In-app purchases:** none


### mVOR

[App page](https://appshunter.io/ios/app/mvor/id6443948602)

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

**In-app purchases:** none


## Frequently asked questions

### Is PotsiApp free?

PotsiApp costs $3.99, with no in-app purchases.

### Is mVOR free?

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

### Do PotsiApp or mVOR have ads?

Neither PotsiApp nor mVOR shows ads.

### Which is updated more often, PotsiApp or mVOR?

PotsiApp ships an update every 20 months, and mVOR every 4 months. Most recently, PotsiApp was updated on September 20, 2026 and mVOR on September 11, 2026.

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