# Radiology Toolbox Lite vs CTisus iPearls

The clearest difference is review sentiment: CTisus iPearls at 100% against Radiology Toolbox Lite's 43%. CTisus iPearls also leads on rating (4.7 vs 2.3) and in-app purchases (none vs 1). Radiology Toolbox Lite's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

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

CTisus iPearls holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: CTisus iPearls has 42 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 43% of Radiology Toolbox Lite's written reviews are positive against 100% of CTisus iPearls's.

Both ship on a similar rhythm, roughly every 6 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Radiology Toolbox Lite | CTisus iPearls |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/radiology-toolbox-lite/id415176373/reviews) | **[4.7 (42 ratings)](https://appshunter.io/ios/app/ctisus-ipearls/id687350624/reviews)** |
| Number of ratings | 3 | **42** |
| Positive reviews | 42.9% of reviews | **100.0% 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 | 137 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| 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 iPearls

[App page](https://appshunter.io/ios/app/ctisus-ipearls/id687350624)

This app provides diagnostic radiologists with valuable insights and facts, known as "pearls," to aid in correct diagnoses and understanding of radiologic images. It organizes these pearls across 28 popular categories and includes a search feature for easy access to thousands of pieces of knowledge.

**Highlights:** Diagnostic radiology pearls, Thousands of insights, 28 popular categories, Search functionality, Radiologic image understanding

**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 iPearls free?

CTisus iPearls is free to download, with no in-app purchases.

### Which has better reviews, Radiology Toolbox Lite or CTisus iPearls?

CTisus iPearls is rated higher. Radiology Toolbox Lite averages 2.3 out of 5 from 3 ratings, while CTisus iPearls averages 4.7 from 42 ratings.

### Do Radiology Toolbox Lite or CTisus iPearls have ads?

Neither Radiology Toolbox Lite nor CTisus iPearls shows ads.

### Which is updated more often, Radiology Toolbox Lite or CTisus iPearls?

Radiology Toolbox Lite ships an update every 6 months, and CTisus iPearls every 6 months. Most recently, Radiology Toolbox Lite was updated on November 1, 2026 and CTisus iPearls on November 1, 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.*