# AO Surgery Reference vs Bullets*

The clearest difference is update cadence: Bullets* at every 8 days against AO Surgery Reference's every 6 months. Bullets* also leads on ratings volume (61 vs 14). AO Surgery Reference's advantage is rating (4.4 vs 4.0) and review sentiment (82% vs 68%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 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 4.0. Both are backed by a comparable volume of ratings — 14 and 61 respectively. Written reviews point the same way: 82% of AO Surgery Reference's written reviews are positive against 68% of Bullets*'s.

AO Surgery Reference ships an update every 6 months, Bullets* every 8 days. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | AO Surgery Reference | Bullets* |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/ao-surgery-reference/id403961165/reviews)** | [4.0 (61 ratings)](https://appshunter.io/ios/app/bullets/id1046432285/reviews) |
| Number of ratings | 14 | **61** |
| Positive reviews | **82.2% of reviews** | 67.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 1 MB | 168 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [Lineage Medical, LLC](https://appshunter.io/developer/1046432134) |

## 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


### Bullets*

[App page](https://appshunter.io/ios/app/bullets/id1046432285)

Access medical and orthopedic educational content, including topics, questions, and cases. Create custom exams, review scientific articles, and monitor community activity. Earn CME credits through self-assessment exams and collaborative learning.

**Highlights:** Medical and orthopedic topics, Customizable exams (Testmaster), Article review with PDFs, Community activity feed, Earn CME credits, Point of Care Learning (PoCL)

**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 Bullets* free?

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

### Which has better reviews, AO Surgery Reference or Bullets*?

AO Surgery Reference is rated higher. AO Surgery Reference averages 4.4 out of 5 from 14 ratings, while Bullets* averages 4.0 from 61 ratings.

### Do AO Surgery Reference or Bullets* have ads?

Neither AO Surgery Reference nor Bullets* shows ads.

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

AO Surgery Reference ships an update every 6 months, and Bullets* every 8 days. Most recently, AO Surgery Reference was updated on September 18, 2026 and Bullets* on September 15, 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.*