DRU Classification vs Implant Identifier
Price, ratings, monetisation and update history for both apps, side by side — 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 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
Implant Identifier
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.
- AI-Identify for Hips
- Community Feed for Expert Help
- Filterable Implant Library
- Submit New Implants
- My Implants History
- X-ray Recognition
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Implant Identifier is the fastest way to identify unknown orthopedic and spine implants from x-ray. Now you can instantly identify spine, hip, knee, and shoulder implants with AI. Join our mission to create the world’s most intelligent implant identification platform—powered by AI, built by the community. The new app includes: AI-Identify for Spine, Hip, Knee, and Shoulder – Snap an x-ray and let AI suggest the closest matching implants. Home Feed (Community) – Can't find a match? Ask expert's in our community of surgeons and reps worldwide. Library with Filters – Browse and filter hundreds of common spine and orthopedic implant x-rays. Submit New Implants – Contribute to the growing AI-library and help others in the community. My Implants- Access your previously identified and unidentified implants and share them with your colleagues.
Screenshots
Verdict
The clearest difference is update cadence: Implant Identifier at every 3 weeks against DRU Classification's every 29 months. DRU Classification's advantage is iOS requirement (12.0 vs 15.5). 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.
DRU Classification ships an update every 29 months, Implant Identifier every 3 weeks. The most recent releases landed on September 13, 2026 and September 22, 2026 respectively.
| Parameter | DRU Classification | Implant Identifier |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (189 ratings) — better |
| Positive reviews | — | 63.3% of reviews |
| Number of ratings | — | 189 — better |
| Update frequency | Every 29 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 28 MB | 128 MB |
| Age rating | 17+ | 12+ |
| Developer | Department of Orthopaedics and Traumatology, The University of Hong Kong | Devise Health |
In-app purchases
DRU Classification
No in-app purchases
Implant Identifier
No in-app purchases
Questions
Is DRU Classification free?
Is Implant Identifier free?
Do DRU Classification or Implant Identifier have ads?
Which is updated more often, DRU Classification or Implant Identifier?
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