# Rheumatools John Libbey E. vs GuideUS MSK

Rheumatools John Libbey E. and GuideUS MSK are too close to call on the numbers: across 3 compared parameters — price, in-app purchases and iOS requirement among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Rheumatools John Libbey E. | GuideUS MSK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 8 months | — |
| Size | 61 MB | 121 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | **iPhone** | — |
| Age rating | 17+ | 17+ |
| Developer | [John Libbey Eurotext](https://appshunter.io/developer/503890972) | [les petites mains](https://appshunter.io/developer/352919528) |

## What reviewers say

### Rheumatools John Libbey E.

[App page](https://appshunter.io/ios/app/rheumatools-john-libbey-e/id1271348064)

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

**In-app purchases:** none


### GuideUS MSK

[App page](https://appshunter.io/ios/app/guideus-msk/id6473532963)

**In-app purchases:** none


## Frequently asked questions

### Is Rheumatools John Libbey E. free?

Rheumatools John Libbey E. is free to download, with no in-app purchases.

### Is GuideUS MSK free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*