# AO Surgery Reference vs VitalCount

The clearest difference is price: AO Surgery Reference at Free against VitalCount's $0.99. AO Surgery Reference also leads on ratings volume (14 vs 3) and iOS requirement (13.0 vs 15.0). VitalCount's advantage is rating (5.0 vs 4.4) and review sentiment (100% vs 86%). On update cadence, ads, in-app purchases and device support there is nothing between them.

AO Surgery Reference is free to download; VitalCount costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VitalCount holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 14 and 3 respectively. Written reviews point the same way: 86% of AO Surgery Reference's written reviews are positive against 100% of VitalCount's.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | AO Surgery Reference | VitalCount |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.4 (14 ratings)](https://appshunter.io/ios/app/ao-surgery-reference/id403961165/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/vitalcount/id6749370840/reviews)** |
| Number of ratings | **14** | 3 |
| Positive reviews | 85.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | **Free** | Paid |
| Size | 1 MB | 111 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [Gerson Rodriguez](https://appshunter.io/developer/1587778389) |

## 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


### VitalCount

[App page](https://appshunter.io/ios/app/vitalcount/id6749370840)

Quickly and accurately assess vital signs for humans and animals. This app allows users to measure heart and respiratory rates with a simple tap, offering organized data storage and export options for professional use.

**Highlights:** Tap-based vital sign measurement, Automatic extrapolation to 60 seconds, Secure patient/animal record storage, Data export (PDF, reports), Graphical visualization of trends, PALS tables and animal vital ranges

**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 VitalCount free?

VitalCount costs $0.99, with no in-app purchases.

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

VitalCount is rated higher. AO Surgery Reference averages 4.4 out of 5 from 14 ratings, while VitalCount averages 5.0 from 3 ratings.

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

Neither AO Surgery Reference nor VitalCount shows ads.

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

AO Surgery Reference ships an update every 6 months, and VitalCount every 6 months. Most recently, AO Surgery Reference was updated on October 15, 2026 and VitalCount on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*