CJOrtho vs DRU Classification
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CJOrtho
This medical app assists orthopedic surgeons and health professionals in managing patients with musculoskeletal disorders. It offers tools for clinical evaluation, decision support, and pre- and post-operative follow-up, including classifications, clinical scores, and a goniometer.
- Orthopedic classifications
- Clinical scores by joint
- Goniometer tool
- Patient database
- Procedure progress tracking
- Pre- and post-operative follow-up
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CJOrtho is an application for orthopedic surgeons and health professionals treating musculoskeletal disorders. Developed by the College of Young Orthopedists, it represents a decision support and management of patients consulting for a musculoskeletal disorder. It also facilitates clinical evaluation and pre- and post-operative follow-up. The application includes five tools: • The classifications most frequently used in Orthopedics Traumatology; • The main clinical scores per joint for the follow-up of your patients; • A goniometer; • A database for keeping patient information and linking it to the other tools in the application; • A portfolio for tracking progress by categorizing procedures as observed, performed, or not yet encountered. The College of Young Orthopedists www.cjortho.fr/site/ Feel free to send us your comments to make this app always more useful.
DRU Classification
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The distal radius and ulna (DRU) classification is an accurate parameter of a child’s 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
Screenshots
Verdict
The clearest difference is update cadence: CJOrtho at every 6 months against DRU Classification's every 29 months. DRU Classification's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CJOrtho ships an update every 6 months, DRU Classification every 29 months. The most recent releases landed on September 15, 2026 and September 13, 2026 respectively.
| Parameter | CJOrtho | DRU Classification |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| Update frequency | Every 6 months — better | Every 29 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 72 MB | 28 MB |
| Age rating | 17+ | 17+ |
| Developer | Collège des Jeunes Orthopédistes | Department of Orthopaedics and Traumatology, The University of Hong Kong |
In-app purchases
CJOrtho
No in-app purchases
DRU Classification
No in-app purchases
Questions
Is CJOrtho free?
Is DRU Classification free?
Do CJOrtho or DRU Classification have ads?
Which is updated more often, CJOrtho or DRU Classification?
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