# Rad Quiz vs Clinical Tree

The clearest difference is in-app purchases: Rad Quiz at none against Clinical Tree's 10. Rad Quiz also leads on review sentiment (100% vs 80%) and iOS requirement (9.0 vs 13.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Clinical Tree sells 10 one-off in-app purchases. Rad Quiz asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Rad Quiz against 5.0 for Clinical Tree. Both are backed by a comparable volume of ratings — 12 and 7 respectively. Written reviews are what separate them: 100% of Rad Quiz's written reviews are positive against 80% of Clinical Tree's.

Rad Quiz ships an update every 3 weeks, Clinical Tree monthly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Rad Quiz | Clinical Tree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (12 ratings)](https://appshunter.io/ios/app/rad-quiz/id1407985024/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/clinical-tree/id6444689971/reviews) |
| Number of ratings | **12** | 7 |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 34 MB | 83 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Stephen Shenouda](https://appshunter.io/developer/1407985023) | [Duc Nguyen](https://appshunter.io/developer/1698359793) |

## What reviewers say

### Rad Quiz

[App page](https://appshunter.io/ios/app/rad-quiz/id1407985024)

Expand your medical imaging knowledge with this educational app. It features 20-question quizzes covering X-Ray, CT, and MRI, helping you identify strengths and weaknesses. Utilize the references tab to review missed cases across various specialties.

**Highlights:** 20-question quizzes, Tests X-Ray, CT, and MRI modalities, Identifies strengths and weaknesses, References tab for missed cases, Content across multiple specialties, Future updates planned

**Features:** macOS Compatibility

**In-app purchases:** none


### Clinical Tree

[App page](https://appshunter.io/ios/app/clinical-tree/id6444689971)

Access a vast medical knowledge base with quick answers to health questions. Explore detailed information on symptoms, diseases, and treatments across numerous clinical specialties. Stay updated with daily new content and specialized databases.

**Highlights:** Instant medical answer search, Information on symptoms and treatments, Daily updated articles and videos, Over 1,000,000 specialized databases, Covers numerous clinical specialties, Aids students and teachers

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Single 9 package | $8.99 | one-time |
| Single 15 package | $14.99 | one-time |
| 6 month package | $19.99 | one-time |
| Single 19 package | $19.99 | one-time |
| Single 25 package | $24.99 | one-time |
| 1 year package | $29.99 | one-time |
| Tzu N package | $29.99 | one-time |
| Tne N package | $39.99 | one-time |
| Nne N package | $99.99 | one-time |
| Lifetime package | $99.99 | one-time |


## Frequently asked questions

### Is Rad Quiz free?

Rad Quiz is free to download, with no in-app purchases.

### Is Clinical Tree free?

Clinical Tree is free to download, with in-app purchases available.

### Which has better reviews, Rad Quiz or Clinical Tree?

Rad Quiz and Clinical Tree are both rated 5.0 out of 5 on the App Store, from 12 and 7 ratings respectively.

### Do Rad Quiz or Clinical Tree have ads?

Neither Rad Quiz nor Clinical Tree shows ads.

### Which is updated more often, Rad Quiz or Clinical Tree?

Rad Quiz ships an update every 3 weeks, and Clinical Tree monthly. Most recently, Rad Quiz was updated on October 24, 2026 and Clinical Tree on October 27, 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.*