# AO Surgery Reference vs Endoscope App

The clearest difference is price: AO Surgery Reference at Free against Endoscope App's $3.99. AO Surgery Reference also leads on review sentiment (86% vs 50%) and iOS requirement (13.0 vs 15.0). Endoscope App's advantage is update cadence (every 2 days vs every 6 months) and chart position (#200 vs unranked). On rating, ratings volume, ads and in-app purchases there is nothing between them.

AO Surgery Reference is free to download; Endoscope App costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Endoscope App holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 14 and 5 respectively. Written reviews complicate that: 86% of AO Surgery Reference's written reviews are positive against 50% of Endoscope App's, so the app with the better star average is not the one people write more warmly about.

AO Surgery Reference ships an update every 6 months, Endoscope App every 2 days. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AO Surgery Reference | Endoscope App |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/ao-surgery-reference/id403961165/reviews) | **[4.6 (5 ratings)](https://appshunter.io/ios/app/endoscope-app/id6478836305/reviews)** |
| Number of ratings | **14** | 5 |
| Positive reviews | **85.8% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#200** |
| Size | 1 MB | 1 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## 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


### Endoscope App

[App page](https://appshunter.io/ios/app/endoscope-app/id6478836305)

**Currently charting:** #200 Top Paid · Medical (US App Store)

This medical app turns your iPhone into an endoscopic camera for healthcare professionals. It offers features like patient watermarking, adjustable lighting, focus, and white balance for clear examinations. Images and videos are saved directly to your device's photo library.

**Highlights:** Patient data watermarking, Landscape mode optimization, Adjustable torch brightness, Adjustable exposure and focus, White balance control, Front-facing camera cycling, Pinch-to-zoom functionality

**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 Endoscope App free?

Endoscope App costs $3.99, with no in-app purchases.

### Which has better reviews, AO Surgery Reference or Endoscope App?

Endoscope App is rated higher. AO Surgery Reference averages 4.4 out of 5 from 14 ratings, while Endoscope App averages 4.6 from 5 ratings.

### Do AO Surgery Reference or Endoscope App have ads?

Neither AO Surgery Reference nor Endoscope App shows ads.

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

AO Surgery Reference ships an update every 6 months, and Endoscope App every 2 days. Most recently, AO Surgery Reference was updated on October 11, 2026 and Endoscope App on October 6, 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.*