# DRU Classification vs OrthoSimple

The clearest difference is update cadence: OrthoSimple at every 2 days against DRU Classification's every 29 months. 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.

DRU Classification ships an update every 29 months, OrthoSimple every 2 days. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | DRU Classification | OrthoSimple |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 2 days** |
| Size | 28 MB | 18 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Department of Orthopaedics and Traumatology, The University of Hong Kong](https://appshunter.io/developer/1208011315) | [MANUEL HONORIO DE LA TORRE](https://appshunter.io/developer/1762881197) |

## What reviewers say

### DRU Classification

[App page](https://appshunter.io/ios/app/dru-classification/id1208011316)

**Features:** macOS Compatibility

**In-app purchases:** none


### OrthoSimple

[App page](https://appshunter.io/ios/app/orthosimple/id6636496425)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DRU Classification free?

DRU Classification is free to download, with no in-app purchases.

### Is OrthoSimple free?

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

### Do DRU Classification or OrthoSimple have ads?

Neither DRU Classification nor OrthoSimple shows ads.

### Which is updated more often, DRU Classification or OrthoSimple?

DRU Classification ships an update every 29 months, and OrthoSimple every 2 days. Most recently, DRU Classification was updated on October 1, 2026 and OrthoSimple on October 3, 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.*