ContrastRx vs SIR Guidelines
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.
SIR Guidelines
Access evidence-based recommendations and tools for healthcare professionals. Features an interactive calculator for scenario-specific anticoagulation and antibiotic advice, simplifying clinical decision-making at the point of care.
- Access published guidelines and statements
- Interactive periprocedural recommendation calculator
- Scenario-specific anticoagulation and antibiotic recommendations
- Tailored recommendations based on patient and procedural risk
- Clinical Practice Guidelines for IVC Filters
- Continual updates with new guidelines and tools
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The Society of Interventional Radiology (SIR) Guidelines app is the go-to source for SIR’s published guidelines and statements at your fingertips. SIR Guidelines is free to use and allows healthcare workers to quickly access evidence-based recommendations in an easy-to-use point of care format intended to simplify clinical decision-making. The app includes an interactive periprocedural recommendation calculator that generates scenario-specific anticoagulation and antibiotic recommendations based on the SIR consensus guidelines. Users can input medications and patient factors to generate recommendations tailored for the patient’s and procedural bleeding risk. The Clinical Practice Guidelines for IVC Filters provide evidence based guidance for the management of patients with thromboembolic disease. The app will be continually updated to include new Clinical Practice Guidelines (CPGs) and tools to assist in clinical decision-making. The Society is providing information and services on this mobile app as a benefit and educational service intended for licensed health care professionals. The information posted here by the Society or any third party should not be considered medical advice or standard of care, and is not intended to replace the independent judgment of or consultation with a qualified medical professional. The use of the mobile app and the Society Content is voluntary and for educational purposes only. Accordingly, the Society assumes no liability for or relating to the use of the content contained within the mobile app by users.
Screenshots
Verdict
The clearest difference is rating: SIR Guidelines at 5.0 against ContrastRx's 4.4. On price, ratings volume, update cadence and ads 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.
SIR Guidelines holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 9 and 23 respectively.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.
| Parameter | ContrastRx | SIR Guidelines |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (9 ratings) | 5.0 (23 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 9 | 23 — better |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 9 MB | 28 MB |
| Age rating | 17+ | 12+ |
| Developer | Mayo Clinic | Society of Interventional Radiology |
Customer experience
ContrastRx
SIR Guidelines
In-app purchases
ContrastRx
No in-app purchases
SIR Guidelines
No in-app purchases
Questions
Is ContrastRx free?
Is SIR Guidelines free?
Which has better reviews, ContrastRx or SIR Guidelines?
Do ContrastRx or SIR Guidelines have ads?
Which is updated more often, ContrastRx or SIR Guidelines?
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