# Radiology Toolbox Lite vs CTisus CT Quick Guides

The clearest difference is rating: CTisus CT Quick Guides at 4.8 against Radiology Toolbox Lite's 2.3. CTisus CT Quick Guides also leads on in-app purchases (none vs 1). Radiology Toolbox Lite's advantage is iOS requirement (9.0 vs 16.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Radiology Toolbox Lite sells 1 one-off in-app purchase. CTisus CT Quick Guides asks for nothing beyond the download.

CTisus CT Quick Guides holds the better App Store score, 4.8 against 2.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Radiology Toolbox Lite | CTisus CT Quick Guides |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/radiology-toolbox-lite/id415176373/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/ctisus-ct-quick-guides/id6743173540/reviews)** |
| Number of ratings | 3 | **6** |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 27 MB | 52 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Softcode Systems, Inc.](https://appshunter.io/developer/415176376) | [Elliot Fishman](https://appshunter.io/developer/399024444) |

## What reviewers say

### Radiology Toolbox Lite

[App page](https://appshunter.io/ios/app/radiology-toolbox-lite/id415176373)

This medical reference app provides quick access to essential facts and tools for radiologists, residents, and students. It includes calculators, criteria, and reference data that are frequently looked up, with an option to unlock more content via in-app purchase.

**Highlights:** Radiographic contrast premedication, GFR calculator, Solitary pulmonary nodule criteria, Gastric Emptying times, Radioisotope half lives, In-app purchase for Pro version

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Radiology Toolbox Upgrade to All Pro Features | Free | one-time |


### CTisus CT Quick Guides

[App page](https://appshunter.io/ios/app/ctisus-ct-quick-guides/id6743173540)

This medical reference app provides radiologists and other healthcare professionals with curated CT images, imaging pearls, and clinical findings across 17 diverse topics. Key information is organized into critical findings, etiology, epidemiology, presentation, and prognosis for each subject.

**Highlights:** Curated CT images, Imaging pearls, Clinical findings, 17 topic sections, Critical CT findings, Etiology, epidemiology, presentation, prognosis

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

**In-app purchases:** none


## Frequently asked questions

### Is Radiology Toolbox Lite free?

Radiology Toolbox Lite is free to download, with in-app purchases available.

### Is CTisus CT Quick Guides free?

CTisus CT Quick Guides is free to download, with no in-app purchases.

### Which has better reviews, Radiology Toolbox Lite or CTisus CT Quick Guides?

CTisus CT Quick Guides is rated higher. Radiology Toolbox Lite averages 2.3 out of 5 from 3 ratings, while CTisus CT Quick Guides averages 4.8 from 6 ratings.

### Do Radiology Toolbox Lite or CTisus CT Quick Guides have ads?

Neither Radiology Toolbox Lite nor CTisus CT Quick Guides shows ads.

### Which is updated more often, Radiology Toolbox Lite or CTisus CT Quick Guides?

Radiology Toolbox Lite ships an update every 6 months, and CTisus CT Quick Guides every 6 months. Most recently, Radiology Toolbox Lite was updated on October 30, 2026 and CTisus CT Quick Guides on October 25, 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.*