DIAX vs Skeleton Study Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DIAX
This app simplifies understanding wrist X-rays for bone age assessment using radiological studies and visual aids. It provides daily images of main bone ages, aiding students and physicians in determining bone age by gender and age group.
- Wrist X-ray analysis
- Bone age assessment
- Radiological studies
- Visual aids
- Gender and age group specific
- Daily radiograph images
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This application is based on established studies of radiology, in a simplified way by drawings, allowing agility in the understanding process of the wrist x-ray by age group. This new update features images of day-to-day radiographs of the wrist of the main bone ages. Application focused on students and physicians in general. Download the application now and see the practicality in stipulating bone age according to gender and age group.
Skeleton Study Guide
Explore detailed 3D models of the human skeleton from multiple angles. Test your knowledge with interactive quizzes covering all body regions. An essential reference for understanding skeletal anatomy.
- 3D skeleton models
- Multiple viewing angles
- Region-based navigation
- Multiple-choice quizzes
- Anatomy testing
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This is a complete skeleton anatomy guide. See bones from 3 different angles. Easily navigate all the regions of the human body. Test yourself on how well you know the skeleton by taking a multiple choice test.
Screenshots
Verdict
The clearest difference is price: Skeleton Study Guide at $6.99 against DIAX's $29.99. DIAX's advantage is rating (5.0 vs 3.0) and update cadence (every 11 months vs every 38 months). On ratings volume, 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
DIAX costs $29.99 and Skeleton Study Guide $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
DIAX holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
DIAX ships an update every 11 months, Skeleton Study Guide every 38 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | DIAX | Skeleton Study Guide |
|---|---|---|
| Price | $29.99 | $6.99 — better |
| Rating | 5.0 (1 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 11 months — better | Every 38 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 45 MB | 16 MB |
| Age rating | 17+ | 4+ |
| Developer | SANTOS DIAS MEDICAL CARE SS | Ryan Bittorf |
In-app purchases
DIAX
No in-app purchases
Skeleton Study Guide
No in-app purchases
Questions
Is DIAX free?
Is Skeleton Study Guide free?
Which has better reviews, DIAX or Skeleton Study Guide?
Do DIAX or Skeleton Study Guide have ads?
Which is updated more often, DIAX or Skeleton Study Guide?
Other comparisons
