DRU Classification vs OrthoSimple
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
DRU Classification
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The distal radius and ulna (DRU) classification is an accurate parameter of a childβs maturity status. It is useful for management of spine and limb deformities as it can predict the peak growth spurt and growth cessation with good sensitivity and specificity. It has also been shown to be an indicator of scoliosis curve progression and predict which curves will deteriorate. This app provides users with a tool to understand the DRU classification, how to use the classification for grading skeletal maturity, and also for guiding treatment. In addition, this app has a calculation function for final body height prediction for female patients with idiopathic scoliosis. Current features: 1. Explanation of the DRU classification 2. Distal radius and ulna features on x-rays for grading 3. DRU grading quiz 4. Final height prediction calculator 5. Useful publications in this field of paediatric skeletal growth and scoliosis curve progression Features to come: 1. Curve progression prediction 2. Image capture and automated grading and prediction
OrthoSimple
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OrthoSimple is the app for helping orthopedists selecting the best treatment for patients with proximal humerus fractures, using the algorithm from the Department of Traumatology and Orthopedic Surgery at St. Gallen, Switzerland.
Screenshots
Verdict
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.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
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.
| Parameter | DRU Classification | OrthoSimple |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 29 months | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPod |
| Requires iOS | 12.0 β better | 13.4 |
| Further details β not scored | ||
| Size | 28 MB | 18 MB |
| Age rating | 17+ | 17+ |
| Developer | Department of Orthopaedics and Traumatology, The University of Hong Kong | MANUEL HONORIO DE LA TORRE |
In-app purchases
DRU Classification
No in-app purchases
OrthoSimple
No in-app purchases
Questions
Is DRU Classification free?
Is OrthoSimple free?
Do DRU Classification or OrthoSimple have ads?
Which is updated more often, DRU Classification or OrthoSimple?
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