# Diagnosaurus® DDx vs The Clinical Problem Solvers

The clearest difference is price: Diagnosaurus® DDx at Free against The Clinical Problem Solvers's $14.99. Diagnosaurus® DDx also leads on ratings volume (2.5K vs 204). The Clinical Problem Solvers's advantage is review sentiment (90% vs 53%) and in-app purchases (none vs 1). On rating, ads and device support there is nothing between them.

Diagnosaurus® DDx is free to download; The Clinical Problem Solvers costs $14.99 up front. Diagnosaurus® DDx sells 1 one-off in-app purchase. The Clinical Problem Solvers asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Diagnosaurus® DDx against 4.8 for The Clinical Problem Solvers. That said, the two scores are not equally well evidenced: Diagnosaurus® DDx has 2.5K ratings behind it against 204, so its average is the more settled of the two. Written reviews are what separate them: 53% of Diagnosaurus® DDx's written reviews are positive against 90% of The Clinical Problem Solvers's.

Diagnosaurus® DDx ships an update every 10 months, The Clinical Problem Solvers every 2 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Diagnosaurus® DDx | The Clinical Problem Solvers |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | **[4.8 (2.5K ratings)](https://appshunter.io/ios/app/diagnosaurus-ddx/id833728910/reviews)** | [4.8 (204 ratings)](https://appshunter.io/ios/app/the-clinical-problem-solvers/id1469480431/reviews) |
| Number of ratings | **2.5K** | 204 |
| Positive reviews | 53.2% of reviews | **90.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#97** |
| Size | 19 MB | 32 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) | [THE CLINICAL PROBLEM SOLVERS INC.](https://appshunter.io/developer/1469480430) |

## What reviewers say

### Diagnosaurus® DDx

[App page](https://appshunter.io/ios/app/diagnosaurus-ddx/id833728910)

This medical reference tool assists healthcare professionals in performing differential diagnoses quickly and confidently. It offers a searchable database of over 1,000 diagnoses, cross-referenced for related conditions, and allows users to save favorite entries and make custom notes.

**Highlights:** Over 1,000 differential diagnoses, Search by organ system, symptom, or disease, See Related DDx feature, Save favorite entries, Highlight and make custom notes, Universal Index Search

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diagnosaurus DDx | $4.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface
- 🚀 Quick access to differential diagnoses
- 💡 Helpful for building differential diagnoses
- 👍 Comprehensive coverage of conditions
- 👍 Useful for medical students and practitioners

**What reviewers complain about**

- 🐛 Lack of in-depth information
- 🐛 Incomplete differential diagnoses
- 🐛 Lack of links to explain conditions
- 🐛 Requires in-app purchase to access full content
- 🐛 Unreliable update mechanism

**Reported bugs**

- Subscription issues and inability to restore purchases
- Blank pages and non-functional content
- Compatibility issues with newer iOS versions

**Requested features**

- Add ability to edit or add custom differential diagnoses
- Improve search functionality and navigation
- Provide more detailed information on conditions
- Integrate with other medical resources and databases
- Improve support for older devices and iOS versions


### The Clinical Problem Solvers

[App page](https://appshunter.io/ios/app/the-clinical-problem-solvers/id1469480431)

**Currently charting:** #97 Top Paid · Medical (US App Store)

Access expert diagnostic reasoning tools, including schemas, illness scripts, and practice cases. Save content for offline use, quickly link to explanation videos and podcast episodes, and stay updated with new materials added monthly. Share resources with colleagues.

**Highlights:** Browse schemas and illness scripts, Access practice cases and videos, Save documents for offline access, Link to podcast episodes, Stay updated with new content, Share resources

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

**In-app purchases:** none

**What reviewers like**

- 💡 Excellent diagnostic frameworks and schemas
- 🎯 Highly useful for clinical reasoning and differential diagnosis
- 👍 Easy to navigate and user-friendly interface
- 🚀 Quick access to information with minimal clicks
- 📱 Offline functionality without premium paywall

**What reviewers complain about**

- 📉 Limited number of diagnoses and topics covered
- 🔍 Search functionality needs improvement
- ❌ Not updated regularly with new schemas
- 📱 Technical issues on certain devices (iPad compatibility)
- ❓ Schemas sometimes too vague without podcast context

**Reported bugs**

- App doesn't work properly on iPad 5
- Download all feature doesn't function
- Search function not working
- Content not displaying under illness scripts and practice cases sections
- App crashes or freezes on certain devices

**Requested features**

- Expand library with more diagnostic schemas
- Improve search functionality
- Add more content for internal medicine and internists
- Include podcast episodes within the app
- Regular updates with new schemas


## Frequently asked questions

### Is Diagnosaurus® DDx free?

Diagnosaurus® DDx is free to download, with in-app purchases available.

### Is The Clinical Problem Solvers free?

The Clinical Problem Solvers costs $14.99, with no in-app purchases.

### Which has better reviews, Diagnosaurus® DDx or The Clinical Problem Solvers?

Diagnosaurus® DDx is rated higher. Diagnosaurus® DDx averages 4.8 out of 5 from 2.5K ratings, while The Clinical Problem Solvers averages 4.8 from 204 ratings.

### Do Diagnosaurus® DDx or The Clinical Problem Solvers have ads?

Neither Diagnosaurus® DDx nor The Clinical Problem Solvers shows ads.

### Which is updated more often, Diagnosaurus® DDx or The Clinical Problem Solvers?

Diagnosaurus® DDx ships an update every 10 months, and The Clinical Problem Solvers every 2 months. Most recently, Diagnosaurus® DDx was updated on October 29, 2026 and The Clinical Problem Solvers on October 29, 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.*