# Basic Radiology vs CTisus L

The clearest difference is monetization model: CTisus L at free against Basic Radiology's free with in-app purchases. Basic Radiology's advantage is iOS requirement (9.0 vs 16.0). On price, rating, review sentiment and ratings volume 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 Basic Radiology against 5.0 for CTisus L. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Basic Radiology ships an update every 35 months, CTisus L every 18 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Basic Radiology | CTisus L |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/basic-radiology-secondlook/id1259825428/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/ctisus-l-spine-pathology/id1436496488/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 18 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 30 MB | 238 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [The University of Michigan](https://appshunter.io/developer/380339599) | [Elliot Fishman](https://appshunter.io/developer/399024444) |

## What reviewers say

### Basic Radiology

[App page](https://appshunter.io/ios/app/basic-radiology-secondlook/id1259825428)

This medical study aid offers a collection of radiographic images for self-testing knowledge of human anatomy and pathologies. Developed by medical faculty, it's designed for students and professionals to evaluate their skills and prepare for exams. All eight specialized slide sets are available for purchase within the app.

**Highlights:** Radiographic image self-testing, Structure and pathology recognition, Eight specialized slide sets, Knowledge gap identification, Exam preparation tool, Developed by medical faculty

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

**In-app purchases:** none


### CTisus L

[App page](https://appshunter.io/ios/app/ctisus-l-spine-pathology/id1436496488)

This app offers a pattern-based approach to evaluating non-traumatic lumbar spine pathology seen on abdominal CT scans. It includes a learn section with illustrations and images, plus an interactive quiz with unknown cases to test diagnostic skills.

**Highlights:** Pattern-based approach to spinal pathology, Learn section with illustrations and CT images, Interactive quiz with unknown cases, Differential diagnoses highlighted, Focus on non-traumatic pathology

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

**In-app purchases:** none


## Frequently asked questions

### Is Basic Radiology free?

Basic Radiology is free to download, with no in-app purchases.

### Is CTisus L free?

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

### Which has better reviews, Basic Radiology or CTisus L?

Basic Radiology and CTisus L are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Basic Radiology or CTisus L have ads?

Neither Basic Radiology nor CTisus L shows ads.

### Which is updated more often, Basic Radiology or CTisus L?

Basic Radiology ships an update every 35 months, and CTisus L every 18 months. Most recently, Basic Radiology was updated on October 9, 2026 and CTisus L on October 24, 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.*