# ScolioTrack vs PotsiApp

The clearest difference is price: PotsiApp at $3.99 against ScolioTrack's $14.99. PotsiApp also leads on rating (3.0 vs 1.0) and device support (4 vs 2). ScolioTrack's advantage is update cadence (every 6 weeks vs every 20 months) and iOS requirement (12.4 vs 15.4). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

ScolioTrack costs $14.99 and PotsiApp $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PotsiApp holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

ScolioTrack ships an update every 6 weeks, PotsiApp every 20 months. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | ScolioTrack | PotsiApp |
| --- | --- | --- |
| Price | $14.99 | **$3.99** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/scoliotrack/id417954464/reviews) | **[3.0 (1 ratings)](https://appshunter.io/ios/app/potsiapp/id1451461437/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 20 months |
| Monetization | Paid | Paid |
| Size | 166 MB | 1 MB |
| Requires iOS | **12.4** | 15.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 17+ |
| Developer | [Kevin Lau](https://appshunter.io/developer/1327103054) | [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) |

## What reviewers say

### ScolioTrack

[App page](https://appshunter.io/ios/app/scoliotrack/id417954464)

Safely and affordably track scoliosis progression from your iPhone. This clinically proven app measures spinal curves, monitors height and weight, and records back photos for visual comparison. Ideal for patients, parents, and healthcare professionals.

**Highlights:** Track spinal curve progression, Measure Angle of Trunk Rotation (ATR), Record height and weight, Take and compare back photos, View data in history graphs, Manage multiple user profiles, Access scoliosis news and FAQs

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is ScolioTrack free?

ScolioTrack costs $14.99, with no in-app purchases.

### Is PotsiApp free?

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

### Which has better reviews, ScolioTrack or PotsiApp?

PotsiApp is rated higher. ScolioTrack averages 1.0 out of 5 from 1 ratings, while PotsiApp averages 3.0 from 1 ratings.

### Do ScolioTrack or PotsiApp have ads?

Neither ScolioTrack nor PotsiApp shows ads.

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

ScolioTrack ships an update every 6 weeks, and PotsiApp every 20 months. Most recently, ScolioTrack was updated on September 23, 2026 and PotsiApp on September 20, 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.*