Comparison

CJOrtho vs DRU Classification

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Orthopedic classifications
  • Clinical scores by joint
  • Goniometer tool
  • Patient database
  • Procedure progress tracking
  • Pre- and post-operative follow-up
Features
Read full description

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.

About

DRU Classification

Features
Read full description

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

CJOrtho4 screens
DRU Classification4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 6 level
CJOrtho versus DRU Classification: the parameters behind the verdict, then further details
ParameterCJOrthoDRU Classification
PriceFreeFree
Positive reviews75.0% of reviews—
Update frequencyEvery 6 months — betterEvery 29 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size72 MB28 MB
Age rating17+17+
DeveloperCollège des Jeunes OrthopédistesDepartment of Orthopaedics and Traumatology, The University of Hong Kong

In-app purchases

None

CJOrtho

No in-app purchases

None

DRU Classification

No in-app purchases

Questions

Is CJOrtho free?
CJOrtho is free to download, with no in-app purchases.
Is DRU Classification free?
DRU Classification is free to download, with no in-app purchases.
Do CJOrtho or DRU Classification have ads?
Neither CJOrtho nor DRU Classification shows ads.
Which is updated more often, CJOrtho or DRU Classification?
CJOrtho ships an update every 6 months, and DRU Classification every 29 months. Most recently, CJOrtho was updated on September 15, 2026 and DRU Classification on September 13, 2026.

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