# Radiology Core vs SIR Guidelines

The clearest difference is update cadence: SIR Guidelines at every 3 weeks against Radiology Core's every 22 months. SIR Guidelines also leads on ratings volume (23 vs 1). Radiology Core's advantage is iOS requirement (9.0 vs 15.1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Radiology Core against 5.0 for SIR Guidelines. That said, the two scores are not equally well evidenced: SIR Guidelines has 23 ratings behind it against 1, so its average is the more settled of the two.

Radiology Core ships an update every 22 months, SIR Guidelines every 3 weeks. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Radiology Core | SIR Guidelines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/radiology-core-physics/id1178469466/reviews) | [5.0 (23 ratings)](https://appshunter.io/ios/app/sir-guidelines/id1552455529/reviews) |
| Number of ratings | 1 | **23** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 20 MB | 28 MB |
| Requires iOS | **9.0** | 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/id1178469466)

Prepare for your Radiology Core Exam with this free resource. It offers a growing question bank to help you study. Contact the developer with feedback for improvements.

**Highlights:** Radiology Core Exam preparation, Physics subject focus, Growing question bank, Free resource, Feedback integration

**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 is free to download, 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?

Radiology Core and SIR Guidelines are both rated 5.0 out of 5 on the App Store, from 1 and 23 ratings respectively.

### 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 22 months, and SIR Guidelines every 3 weeks. Most recently, Radiology Core was updated on October 3, 2026 and SIR Guidelines on October 13, 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.*