# CJOrtho vs ACL

The clearest difference is in-app purchases: CJOrtho at none against ACL's 3. ACL's advantage is iOS requirement (10.2 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ACL sells 3 one-off in-app purchases. CJOrtho asks for nothing beyond the download.

CJOrtho ships an update every 6 months, ACL every 8 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | CJOrtho | ACL |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 8 months |
| Monetization | Free | — |
| Size | 72 MB | 38 MB |
| Requires iOS | 16.0 | **10.2** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Collège des Jeunes Orthopédistes](https://appshunter.io/developer/937704597) | [Linova Software GmbH](https://appshunter.io/developer/1152971507) |

## What reviewers say

### CJOrtho

[App page](https://appshunter.io/ios/app/cjortho/id937704598)

This medical app assists orthopedic surgeons and health professionals in managing patients with musculoskeletal disorders. It offers tools for clinical evaluation, decision support, and pre- and post-operative follow-up, including classifications, clinical scores, and a goniometer.

**Highlights:** Orthopedic classifications, Clinical scores by joint, Goniometer tool, Patient database, Procedure progress tracking, Pre- and post-operative follow-up

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

**In-app purchases:** none


### ACL

[App page](https://appshunter.io/ios/app/acl-x/id1439731734)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Credit | $0.99 | one-time |
| 10 Credits | $8.99 | one-time |
| 50 Credits | $24.99 | one-time |


## Frequently asked questions

### Is CJOrtho free?

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

### Is ACL free?

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

### Do CJOrtho or ACL have ads?

Neither CJOrtho nor ACL shows ads.

### Which is updated more often, CJOrtho or ACL?

CJOrtho ships an update every 6 months, and ACL every 8 months. Most recently, CJOrtho was updated on November 1, 2026 and ACL on October 26, 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.*