# Radiology Core vs SIR Guidelines

The clearest difference is price: SIR Guidelines at Free against Radiology Core's $9.99. SIR Guidelines also leads on rating (5.0 vs 2.9) and update cadence (every 3 weeks vs every 6 months). Radiology Core's advantage is chart position (#89 vs unranked) and iOS requirement (12.0 vs 15.1). On ratings volume, ads, in-app purchases and device support there is nothing between them.

SIR Guidelines is free to download; Radiology Core costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SIR Guidelines holds the better App Store score, 5.0 against 2.9. Both are backed by a comparable volume of ratings — 50 and 23 respectively.

Radiology Core ships an update every 6 months, SIR Guidelines every 3 weeks. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Radiology Core | SIR Guidelines |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [2.9 (50 ratings)](https://appshunter.io/ios/app/radiology-core-physics-plus/id1225040758/reviews) | **[5.0 (23 ratings)](https://appshunter.io/ios/app/sir-guidelines/id1552455529/reviews)** |
| Number of ratings | **50** | 23 |
| Positive reviews | 23.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | **#89** | — |
| Size | 25 MB | 28 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Lieu Duong](https://appshunter.io/developer/1657425589) | [Society of Interventional Radiology](https://appshunter.io/developer/508819578) |

## What reviewers say

### Radiology Core

[App page](https://appshunter.io/ios/app/radiology-core-physics-plus/id1225040758)

**Currently charting:** #89 Top Paid · Medical (US App Store)

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.

**Highlights:** Comprehensive physics review, Over 500 board-relevant questions, Full explanation for each question, Covers all modalities, Includes noninterpretive skills, Continually updated content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SIR Guidelines

[App page](https://appshunter.io/ios/app/sir-guidelines/id1552455529)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Radiology Core free?

Radiology Core costs $9.99, with no in-app purchases.

### Is SIR Guidelines free?

SIR Guidelines is free to download, with no in-app purchases.

### Which has better reviews, Radiology Core or SIR Guidelines?

SIR Guidelines is rated higher. Radiology Core averages 2.9 out of 5 from 50 ratings, while SIR Guidelines averages 5.0 from 23 ratings.

### Do Radiology Core or SIR Guidelines have ads?

Neither Radiology Core nor SIR Guidelines shows ads.

### Which is updated more often, Radiology Core or SIR Guidelines?

Radiology Core ships an update every 6 months, and SIR Guidelines every 3 weeks. Most recently, Radiology Core was updated on September 24, 2026 and SIR Guidelines on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*