# AO Surgery Reference vs LENS Connected Tower App

AO Surgery Reference and LENS Connected Tower App both sit at 4.4 stars, but that hides the real split: 86% of AO Surgery Reference's written reviews are positive against 0% of LENS Connected Tower App's. AO Surgery Reference also leads on device support (3 vs 1). LENS Connected Tower App's advantage is iOS requirement (11.0 vs 13.0). On price, rating, ratings volume and update cadence there is nothing between them.

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

LENS Connected Tower 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 0% of LENS Connected Tower 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, LENS Connected Tower App every 7 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AO Surgery Reference | LENS Connected Tower App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/ao-surgery-reference/id403961165/reviews) | **[4.6 (5 ratings)](https://appshunter.io/ios/app/lens-connected-tower-app/id1059859280/reviews)** |
| Number of ratings | **14** | 5 |
| Positive reviews | **85.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 1 MB | 252 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 17+ | 12+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [Smith & Nephew](https://appshunter.io/developer/549124657) |

## 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


### LENS Connected Tower App

[App page](https://appshunter.io/ios/app/lens-connected-tower-app/id1059859280)

Control LENS HD/4K cameras and surgical equipment remotely. Capture, annotate, and generate custom PDF reports of surgical images and videos. Enables operation outside the sterile field.

**Highlights:** Remote camera control, Surgical equipment control, Image and video storage, Voice, text, drawing annotations, Custom PDF report generation, Print and email reports

**Features:** macOS Compatibility

**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 LENS Connected Tower App free?

LENS Connected Tower App is free to download, with no in-app purchases.

### Which has better reviews, AO Surgery Reference or LENS Connected Tower App?

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

### Do AO Surgery Reference or LENS Connected Tower App have ads?

Neither AO Surgery Reference nor LENS Connected Tower App shows ads.

### Which is updated more often, AO Surgery Reference or LENS Connected Tower App?

AO Surgery Reference ships an update every 6 months, and LENS Connected Tower App every 7 months. Most recently, AO Surgery Reference was updated on October 23, 2026 and LENS Connected Tower App on October 24, 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.*