ContrastRx vs Radiology Core
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ContrastRx
Provides quick access to treatment regimens for life-threatening reactions to radiographic contrast agents. Includes clinical descriptions, visual examples, and treatment protocols, along with helpful calculators and information on nephrogenic systemic fibrosis.
- Treatment regimens for contrast reactions
- Clinical descriptions and pictorial examples
- eGFR calculator
- Pediatric dose calculator
- Steroid pretreatment regimens
- Nephrogenic systemic fibrosis overview
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This app provides quick access to treatment regimens for potentially life-threatening reactions that can occur with iodine or gadolinium radiographic contrast. Included are clinical descriptions, pictorial examples, sound clips, and treatment regimens for the various types of reactions. Also included are a pediatric dose calculator, an eGFR calculator, a self-assessment module, pretreatment medication regimens, and an overview of nephrogenic systemic fibrosis.
Radiology Core
Prepare for the Radiology Core Exam's physics section with a premium resource. Access over 500 board-relevant questions with detailed explanations, covering all modalities and noninterpretive skills. The app is continually updated with new content to enhance your study time.
- Comprehensive physics review
- Over 500 board-relevant questions
- Full explanation for each question
- Covers all modalities
- Includes noninterpretive skills
- Continually updated content
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Premium resource for Radiology Core Exam - Physics preparation. - Comprehensive physics review in all modalities and noninterpretive skills to help make the most of your study time - Over 500 board-relevant, high-yield questions with full explanation to focus your study - Continually updated with new questions and images Upcoming changes: - More questions with images Contact PhysicsiOS@MDToolkit.net with any questions, comments, or advice to improve app.
Screenshots
Verdict
The clearest difference is price: ContrastRx at Free against Radiology Core's $9.99. ContrastRx also leads on rating (4.4 vs 2.9) and update cadence (every 3 weeks vs every 6 months). Radiology Core's advantage is chart position (#199 vs unranked) and ratings volume (50 vs 9). On 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
ContrastRx is free to download; Radiology Core costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ContrastRx holds the better App Store score, 4.4 against 2.9. That said, the two scores are not equally well evidenced: Radiology Core has 50 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 50% of ContrastRx's written reviews are positive against 24% of Radiology Core's.
ContrastRx ships an update every 3 weeks, Radiology Core every 6 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.
| Parameter | ContrastRx | Radiology Core |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 4.4 (9 ratings) — better | 2.9 (50 ratings) |
| Positive reviews | 50.0% of reviews — better | 23.8% of reviews |
| Number of ratings | 9 | 50 — better |
| Update frequency | Every 3 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #199 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 25 MB |
| Age rating | 17+ | 17+ |
| Developer | Mayo Clinic | Lieu Duong |
Customer experience
ContrastRx
Radiology Core
In-app purchases
ContrastRx
No in-app purchases
Radiology Core
No in-app purchases
