# CTisus CT Quick Guides vs INTERACTIVE MRI ATLAS

The clearest difference is price: CTisus CT Quick Guides at Free against INTERACTIVE MRI ATLAS's $19.99. INTERACTIVE MRI ATLAS's advantage is update cadence (every 3 weeks vs every 6 months) and device support (4 vs 2). On ads, in-app purchases and iOS requirement there is nothing between them.

CTisus CT Quick Guides is free to download; INTERACTIVE MRI ATLAS costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CTisus CT Quick Guides ships an update every 6 months, INTERACTIVE MRI ATLAS every 3 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CTisus CT Quick Guides | INTERACTIVE MRI ATLAS |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/ctisus-ct-quick-guides/id6743173540/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 52 MB | 430 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 12+ |
| Developer | [Elliot Fishman](https://appshunter.io/developer/399024444) | [ANATOMYX LABS](https://appshunter.io/developer/1885288901) |

## What reviewers say

### 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


### INTERACTIVE MRI ATLAS

[App page](https://appshunter.io/ios/app/interactive-mri-atlas/id6760607195)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CTisus CT Quick Guides free?

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

### Is INTERACTIVE MRI ATLAS free?

INTERACTIVE MRI ATLAS costs $19.99, with no in-app purchases.

### Do CTisus CT Quick Guides or INTERACTIVE MRI ATLAS have ads?

Neither CTisus CT Quick Guides nor INTERACTIVE MRI ATLAS shows ads.

### Which is updated more often, CTisus CT Quick Guides or INTERACTIVE MRI ATLAS?

CTisus CT Quick Guides ships an update every 6 months, and INTERACTIVE MRI ATLAS every 3 weeks. Most recently, CTisus CT Quick Guides was updated on October 25, 2026 and INTERACTIVE MRI ATLAS on October 28, 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.*