# AO Surgery Reference vs mediCS

The clearest difference is review sentiment: AO Surgery Reference at 86% against mediCS's 0%. AO Surgery Reference also leads on price (Free vs $1.99) and rating (4.4 vs 1.0). On ads, in-app purchases and device support there is nothing between them.

AO Surgery Reference is free to download; mediCS costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AO Surgery Reference holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: AO Surgery Reference has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of AO Surgery Reference's written reviews are positive against 0% of mediCS's.

AO Surgery Reference ships an update every 6 months, mediCS every 17 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | AO Surgery Reference | mediCS |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/ao-surgery-reference/id403961165/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/medics/id635146772/reviews) |
| Number of ratings | **14** | 1 |
| Positive reviews | **85.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 17 months |
| Monetization | **Free** | Paid |
| Size | 1 MB | 2 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [LUIS MOSQUERA A.](https://appshunter.io/developer/541448831) |

## 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


### mediCS

[App page](https://appshunter.io/ios/app/medics/id635146772)

This app provides a comprehensive collection of medical scores, criteria, conversions, and calculators. It allows users to quickly access and utilize essential medical formulas and scoring systems for various clinical assessments and calculations.

**Highlights:** Medical criteria and scores, Clinical calculators, Unit conversions, Search and copy results, Comprehensive list of formulas

**Features:** macOS Compatibility, 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 mediCS free?

mediCS costs $1.99, with no in-app purchases.

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

AO Surgery Reference is rated higher. AO Surgery Reference averages 4.4 out of 5 from 14 ratings, while mediCS averages 1.0 from 1 ratings.

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

Neither AO Surgery Reference nor mediCS shows ads.

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

AO Surgery Reference ships an update every 6 months, and mediCS every 17 months. Most recently, AO Surgery Reference was updated on October 7, 2026 and mediCS on October 8, 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.*