# OrthoCode vs US MSK

The clearest difference is in-app purchases: OrthoCode at none against US MSK's 2. OrthoCode also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (9.0 vs 13.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. US MSK sells 2 in-app purchases, starting at $0.99 per month. OrthoCode asks for nothing beyond the download.

OrthoCode ships an update weekly, US MSK every 6 weeks. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | OrthoCode | US MSK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 81 MB | 31 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 17+ |
| Developer | [Mocka Negocios Tecnologicos LTDA](https://appshunter.io/developer/976571671) | [Azul Systems](https://appshunter.io/developer/1460850225) |

## What reviewers say

### OrthoCode

[App page](https://appshunter.io/ios/app/orthocode/id1578186557)

This app simplifies orthopedic procedure coding for medical professionals by integrating various CBHPM coding options. It aims to reduce administrative burdens for orthopedic surgeons.

**Highlights:** Integrates CBHPM coding options, Simplifies orthopedic procedure coding, Reduces bureaucracy for orthopedic surgeons, Facilitates administrative tasks

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

**In-app purchases:** none


### US MSK

[App page](https://appshunter.io/ios/app/us-msk/id1611606746)

This medical app serves as an atlas for musculoskeletal ultrasound imaging of the upper and lower limbs. It provides detailed visual guidance for diagnostic procedures. The app offers a free trial for its subscription plans.

**Highlights:** Musculoskeletal ultrasound atlas, Upper limb imaging, Lower limb imaging, Diagnostic guidance, Free trial available

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $9.99 | per year |


## Frequently asked questions

### Is OrthoCode free?

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

### Is US MSK free?

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

### Do OrthoCode or US MSK have ads?

Neither OrthoCode nor US MSK shows ads.

### Which is updated more often, OrthoCode or US MSK?

OrthoCode ships an update weekly, and US MSK every 6 weeks. Most recently, OrthoCode was updated on October 1, 2026 and US MSK on October 4, 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.*