# Practical Gastroenterology vs Diagnosaurus® DDx

The clearest difference is review sentiment: Practical Gastroenterology at 100% against Diagnosaurus® DDx's 53%. Practical Gastroenterology also leads on in-app purchases (none vs 1) and iOS requirement (10.2 vs 15.0). Diagnosaurus® DDx's advantage is rating (4.8 vs 4.0) and ratings volume (2.5K vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Diagnosaurus® DDx sells 1 one-off in-app purchase. Practical Gastroenterology asks for nothing beyond the download.

Diagnosaurus® DDx holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Diagnosaurus® DDx has 2.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Practical Gastroenterology's written reviews are positive against 53% of Diagnosaurus® DDx's, so the app with the better star average is not the one people write more warmly about.

Practical Gastroenterology ships an update every 14 months, Diagnosaurus® DDx every 10 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Practical Gastroenterology | Diagnosaurus® DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/practical-gastroenterology/id525788285/reviews) | **[4.8 (2.5K ratings)](https://appshunter.io/ios/app/diagnosaurus-ddx/id833728910/reviews)** |
| Number of ratings | 1 | **2.5K** |
| Positive reviews | **100.0% of reviews** | 53.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 10 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 19 MB |
| Requires iOS | **10.2** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [Practical Gastroenterology Publishing, Inc.](https://appshunter.io/developer/525788288) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Practical Gastroenterology

[App page](https://appshunter.io/ios/app/practical-gastroenterology/id525788285)

This medical journal app provides practical, peer-reviewed information on the diagnosis and management of gastrointestinal diseases. Content is presented in a series format, offering useful insights for healthcare professionals.

**Highlights:** Peer-reviewed journal, Diagnosis and management of GI diseases, Series format content, Practical information for healthcare professionals, Digital publishing technology

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Practical Gastroenterology free?

Practical Gastroenterology is free to download, with no in-app purchases.

### Is Diagnosaurus® DDx free?

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

### Which has better reviews, Practical Gastroenterology or Diagnosaurus® DDx?

Diagnosaurus® DDx is rated higher. Practical Gastroenterology averages 4.0 out of 5 from 1 ratings, while Diagnosaurus® DDx averages 4.8 from 2.5K ratings.

### Do Practical Gastroenterology or Diagnosaurus® DDx have ads?

Neither Practical Gastroenterology nor Diagnosaurus® DDx shows ads.

### Which is updated more often, Practical Gastroenterology or Diagnosaurus® DDx?

Practical Gastroenterology ships an update every 14 months, and Diagnosaurus® DDx every 10 months. Most recently, Practical Gastroenterology was updated on November 1, 2026 and Diagnosaurus® DDx on November 8, 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.*