# AO/OTA Fracture Classification vs Implant Identifier

The clearest difference is review sentiment: Implant Identifier at 65% against AO/OTA Fracture Classification's 33%. Implant Identifier also leads on rating (4.7 vs 4.3) and update cadence (every 3 weeks vs every 5 months). AO/OTA Fracture Classification's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (11.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Implant Identifier holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Implant Identifier has 271 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 33% of AO/OTA Fracture Classification's written reviews are positive against 65% of Implant Identifier's.

AO/OTA Fracture Classification ships an update every 5 months, Implant Identifier every 3 weeks. Both last shipped on October 29, 2026.

## The numbers

| Metric | AO/OTA Fracture Classification | Implant Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (15 ratings)](https://appshunter.io/ios/app/aoota-fracture-classification/id399757053/reviews) | **[4.7 (271 ratings)](https://appshunter.io/ios/app/implant-identifier/id1343366864/reviews)** |
| Number of ratings | 15 | **271** |
| Positive reviews | 33.3% of reviews | **64.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 53 MB | 128 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [AO Foundation](https://appshunter.io/developer/399757056) | [Devise Health](https://appshunter.io/developer/1006656243) |

## What reviewers say

### AO/OTA Fracture Classification

[App page](https://appshunter.io/ios/app/aoota-fracture-classification/id399757053)

This medical reference tool helps physicians and surgeons classify fractures and dislocations using the 2018 AO/OTA system. It provides a streamlined, clinically relevant guide for coding skeletal trauma, aiding in research and outcome assessments.

**Highlights:** Classify fractures and dislocations, Utilize common terminology, Apply classification principles, Provide standard codes for research, Information on radiological investigations, High-quality, enlargeable x-rays, Search function for fracture codes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Implant Identifier

[App page](https://appshunter.io/ios/app/implant-identifier/id1343366864)

Instantly identify orthopedic and spine implants from X-rays using AI. This app helps medical professionals recognize unknown implants, access a community of experts, and contribute to a growing library of implant data. Features include AI identification for hips, a community feed for assistance, and a filterable implant library.

**Highlights:** AI-Identify for Hips, Community Feed for Expert Help, Filterable Implant Library, Submit New Implants, My Implants History, X-ray Recognition

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AO/OTA Fracture Classification free?

AO/OTA Fracture Classification is free to download, with no in-app purchases.

### Is Implant Identifier free?

Implant Identifier is free to download, with no in-app purchases.

### Which has better reviews, AO/OTA Fracture Classification or Implant Identifier?

Implant Identifier is rated higher. AO/OTA Fracture Classification averages 4.3 out of 5 from 15 ratings, while Implant Identifier averages 4.7 from 271 ratings.

### Do AO/OTA Fracture Classification or Implant Identifier have ads?

Neither AO/OTA Fracture Classification nor Implant Identifier shows ads.

### Which is updated more often, AO/OTA Fracture Classification or Implant Identifier?

AO/OTA Fracture Classification ships an update every 5 months, and Implant Identifier every 3 weeks. Most recently, AO/OTA Fracture Classification was updated on October 29, 2026 and Implant Identifier on October 29, 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.*