# AO Surgery Reference vs MedOne

AO Surgery Reference and MedOne both sit at 4.4 stars, but that hides the real split: 86% of AO Surgery Reference's written reviews are positive against 22% of MedOne's. AO Surgery Reference also leads on monetization model (free vs free with in-app purchases) and iOS requirement (13.0 vs 15.0). MedOne's advantage is update cadence (every 2 months vs every 6 months) and ratings volume (135 vs 14). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.4 for AO Surgery Reference against 4.5 for MedOne. That said, the two scores are not equally well evidenced: MedOne has 135 ratings behind it against 14, so its average is the more settled of the two. Written reviews are what separate them: 86% of AO Surgery Reference's written reviews are positive against 22% of MedOne's.

AO Surgery Reference ships an update every 6 months, MedOne every 2 months. The most recent releases landed on September 24, 2026 and July 30, 2026 respectively.

## The numbers

| Metric | AO Surgery Reference | MedOne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/ao-surgery-reference/id403961165/reviews) | **[4.5 (135 ratings)](https://appshunter.io/ios/app/medone/id1270209436/reviews)** |
| Number of ratings | 14 | **135** |
| Positive reviews | **85.8% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 8 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [Thieme Publishers](https://appshunter.io/developer/509171630) |

## What reviewers say

### AO Surgery Reference

[App page](https://appshunter.io/ios/app/ao-surgery-reference/id403961165)

Access a comprehensive online repository of surgical knowledge for fracture management. It provides detailed guidance on diagnosis, treatment, and aftercare for numerous fracture types, supported by extensive illustrations and expert review.

**Highlights:** 353 fracture types covered, 172 surgical approaches, 1222 surgical procedures, Over 30,000 illustrations, Feline, canine, and equine fracture care, Powerful search function

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

**In-app purchases:** none


### MedOne

[App page](https://appshunter.io/ios/app/medone/id1270209436)

Access comprehensive medical content from Thieme, including neurosurgery, radiology, and plastic surgery. View e-books and e-journals online or offline on your mobile device.

**Highlights:** Access Thieme's award-winning content, Multiple medical specialties, Offline and online access, View e-books and e-journals, Mobile viewing on iPhone/iPad

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AO Surgery Reference free?

AO Surgery Reference is free to download, with no in-app purchases.

### Is MedOne free?

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

### Which has better reviews, AO Surgery Reference or MedOne?

MedOne is rated higher. AO Surgery Reference averages 4.4 out of 5 from 14 ratings, while MedOne averages 4.5 from 135 ratings.

### Do AO Surgery Reference or MedOne have ads?

Neither AO Surgery Reference nor MedOne shows ads.

### Which is updated more often, AO Surgery Reference or MedOne?

AO Surgery Reference ships an update every 6 months, and MedOne every 2 months. Most recently, AO Surgery Reference was updated on September 24, 2026 and MedOne on July 30, 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.*