# CTisus 10 Minute ER Challenge vs RadCase

The clearest difference is price: CTisus 10 Minute ER Challenge at Free against RadCase's $4.99. RadCase's advantage is update cadence (monthly vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CTisus 10 Minute ER Challenge is free to download; RadCase costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CTisus 10 Minute ER Challenge ships an update every 4 months, RadCase monthly. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | CTisus 10 Minute ER Challenge | RadCase |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/ctisus-10-minute-er-challenge/id1154587260/reviews)** | — |
| Number of ratings | **15** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 24 MB | 164 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Elliot Fishman](https://appshunter.io/developer/399024444) | [Parikh Radiology, P.L.L.C.](https://appshunter.io/developer/6801351998) |

## What reviewers say

### CTisus 10 Minute ER Challenge

[App page](https://appshunter.io/ios/app/ctisus-10-minute-er-challenge/id1154587260)

This app offers a timed challenge for medical professionals to interpret emergency radiology images. Users diagnose 60 CT cases within 10 minutes, with a 10-second limit per diagnosis before the answer is revealed. It's designed to evaluate and improve knowledge of emergency imaging.

**Highlights:** 60 emergency CT cases, 10-minute diagnostic challenge, 10-second diagnosis per case, Radiology image interpretation, Knowledge evaluation tool

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

**In-app purchases:** none


### RadCase

[App page](https://appshunter.io/ios/app/radcase/id6801351494)

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

**In-app purchases:** none


## Frequently asked questions

### Is CTisus 10 Minute ER Challenge free?

CTisus 10 Minute ER Challenge is free to download, with no in-app purchases.

### Is RadCase free?

RadCase costs $4.99, with no in-app purchases.

### Do CTisus 10 Minute ER Challenge or RadCase have ads?

Neither CTisus 10 Minute ER Challenge nor RadCase shows ads.

### Which is updated more often, CTisus 10 Minute ER Challenge or RadCase?

CTisus 10 Minute ER Challenge ships an update every 4 months, and RadCase monthly. Most recently, CTisus 10 Minute ER Challenge was updated on November 2, 2026 and RadCase on November 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*