# ScolioTrack vs 3D

The clearest difference is price: 3D at Free against ScolioTrack's $14.99. ScolioTrack's advantage is in-app purchases (none vs 3) and iOS requirement (12.4 vs 17.2). On update cadence, ads and device support there is nothing between them.

3D is free to download; ScolioTrack costs $14.99 up front. 3D sells 3 in-app purchases, starting at $19.99 per 7 days. ScolioTrack asks for nothing beyond the download.

ScolioTrack ships an update every 6 weeks, 3D every 2 months. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ScolioTrack | 3D |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/scoliotrack/id417954464/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Paid | — |
| Size | 166 MB | 45 MB |
| Requires iOS | **12.4** | 17.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Kevin Lau](https://appshunter.io/developer/1327103054) | [Sidekick Interactive, Inc.](https://appshunter.io/developer/490552471) |

## 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


### 3D

[App page](https://appshunter.io/ios/app/3d-sidekick/id6739503140)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $19.99 | per 7 days |
| Monthly Plan | $49.99 | per month |
| Annual Plan | $499.99 | per year |


## Frequently asked questions

### Is ScolioTrack free?

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

### Is 3D free?

3D is free to download, with in-app purchases available.

### Do ScolioTrack or 3D have ads?

Neither ScolioTrack nor 3D shows ads.

### Which is updated more often, ScolioTrack or 3D?

ScolioTrack ships an update every 6 weeks, and 3D every 2 months. Most recently, ScolioTrack was updated on September 28, 2026 and 3D on September 23, 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.*