Comparison

AO Surgery Reference vs Endoscope App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AO Surgery Reference

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
Read full description

QUICK ONLINE REFERENCE IN CLINICAL LIFE Gain easy access to the award-winning AO Surgery Reference. AO Surgery Reference is an online repository for surgical knowledge. It describes the complete surgical management process from diagnosis to aftercare for all fractures of a given anatomical region, and also assembles relevant material that the AO has published before. It gives access to:   • aid in surgical decision making for 353 fracture types • 172 approaches • 1222 surgical procedures • all richly illustrated with more than 30'000 Illustrations and much more. To ensure the quality of the content, it is authored, edited, and peer reviewed by experienced AO Faculty from all over the world, some of which are also well-known textbook authors/editors. This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020. The highlights are: • Consistent navigational logic and user experience on all screen sizes • Inclusion of feline, canine, and equine fracture care • Combination of Preparation – Approach – Reduction and Fixation – Aftercare into one step called treatment. • Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts.

About

Endoscope App

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
Currently charting
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The Endoscope App transforms your iPhone into a powerful endoscopic camera, providing healthcare professionals with a versatile, efficient, and portable solution for conducting endoscopic examinations. REQUIRES A PHYSICAL ADAPTOR TO ATTACH TO YOUR ENDOSCOPE. Key Features: - Patient Description Watermarks: Easily enter patient details to watermark photos for efficient record-keeping and identification. - Landscape Mode Optimization: With landscape mode locked, enjoy improved compatibility with AirPlay and ensure consistency in image and video orientation across all examinations. - Adjustable Torch Brightness: Fine-tune lighting conditions with a convenient slider control for the torch, ensuring optimal illumination for every procedure. - Adjustable Exposure: Fine-tune exposure with a convenient slider control. - Adjustable Focus: Fine-tune focus with a convenient slider control. - Adjustable Focus: Fine-tune focus with a convenient slider control. - White Balance: Adjust white balance with a slider control. - Front-Facing Camera Cycling: Easily switch between all front-facing cameras to align perfectly with your adaptor, making every endoscopic view as clear as possible. - Pinch-to-Zoom: Enhance your view with pinch-to-zoom functionality, allowing the endoscope's field of view to occupy more screen space. Data Privacy: Your privacy is our priority. The Endoscope App does not store any data internally. All images and videos are directly saved to your photo real, not within the app. Designed for healthcare professionals, the Endoscope App requires a physical endoscopy adapter compatible with your iPhone. This app is designed for educational purposes only and should not be used for the diagnoses or treatment of diseases.

Screenshots

AO Surgery Reference4 screens
Endoscope App3 screens

Verdict

The call

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 (#189 vs unranked). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 5 level
AO Surgery Reference versus Endoscope App: the parameters behind the verdict, then further details
ParameterAO Surgery ReferenceEndoscope App
PriceFree — better$3.99
Rating4.4 (14 ratings)4.6 (5 ratings) — better
Positive reviews85.8% of reviews — better50.0% of reviews
Number of ratings14 — better5
Update frequencyEvery 6 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#189 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size1 MB1 MB
Age rating17+4+
DeveloperAO FoundationMy Call Bag LLC

Customer experience

AO Surgery Reference

All ratings14 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews113 reviews
Positive85.8%
Neutral3.5%
Negative10.6%

Endoscope App

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

AO Surgery Reference

No in-app purchases

None

Endoscope App

No in-app purchases

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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