# Mobissom vs US MSK

The clearest difference is review sentiment: US MSK at 50% against Mobissom's 0%. Mobissom's advantage is in-app purchases (none vs 2). On price, update cadence, 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. Mobissom asks for nothing beyond the download.

Mobissom ships an update monthly, US MSK every 6 weeks. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mobissom | US MSK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mobissom/id1439991064/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 31 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Mobissom](https://appshunter.io/developer/1439991063) | [Azul Systems](https://appshunter.io/developer/1460850225) |

## What reviewers say

### Mobissom

[App page](https://appshunter.io/ios/app/mobissom/id1439991064)

This app provides innovative wireless diagnostic ultrasound imaging. It offers advanced imaging capabilities for medical professionals on the go.

**Highlights:** Wireless ultrasound imaging, Diagnostic imaging, Portable medical device, Advanced imaging capabilities

**Features:** macOS Compatibility

**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 Mobissom free?

Mobissom 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 Mobissom or US MSK have ads?

Neither Mobissom nor US MSK shows ads.

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

Mobissom ships an update monthly, and US MSK every 6 weeks. Most recently, Mobissom was updated on October 6, 2026 and US MSK on October 25, 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.*