# MobileDDx™ Pocket DDx Tool — McGraw-Hill Diagnosaurus

> Medical differential diagnosis reference tool with over 1,000 conditions. (iPhone/iPad app by Skyscape Medpresso Inc.)

- Source: https://appshunter.io/ios/app/mobileddx-pocket-ddx-tool/id1076514957 (this page in markdown: same URL + `.md`)
- Developer: [Skyscape Medpresso Inc](https://appshunter.io/developer/818609416)
- Category: Medical, Education
- Price: Free with in-app purchases
- Rating: 4.40/5 from 19 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 48 MB
- Languages: American English
- Released: 2016-09-03
- Data updated: 2026-08-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/mobileddx-pocket-ddx-tool/id1076514957/reviews.md

## What is MobileDDx™ Pocket DDx Tool?

"Try before you buy" - Download the FREE App, which includes sample content. In-App purchase required to unlock all content.

Over 1,000+ medicine & surgery differential diagnoses. Sign & Symptom index. Disease Index. Based on 4th Edition of Diagnosaurus

Based on 4th Edition of Diagnosaurus, this authoritative, quick reference tool helps you make accurate, informed and confident differential diagnoses at point of care.

With MobileDDx™ you can choose to explore topics by organ system, symptoms or diseases only, or search across all topics. For example, if you wish to review the causes of a patient's chief complaint, simply select the symptom or sign from the main index. If you have made a diagnosis and wonder what other disorders to consider, select your diagnosis from the list to see its differential diagnoses.

Includes over 1,000 medicine and surgery differential diagnoses derived from the most trusted Current Lange series.

And only with Skyscape, any MobileDDx™ differential diagnoses topic can be quickly and easily cross-indexed to related drug, disease or diagnostic topics across your entire mobile reference library!
No internet connection is required to access the content after the initial download. Find information quickly using powerful SmartSearch technology. Search part of term for those hard to spell medical terms.

If you have any questions or comments, email us any time: customersupport@skyscape.com or call 508-299-3000

Privacy Policy - https://www.skyscape.com/terms-of-service/privacypolicy.aspx
Terms and Conditions - https://www.skyscape.com/terms-of-service/licenseagreement.aspx

Author(s): Roni F. Zeiger, MD
Publisher: The McGraw-Hill Companies, Inc.

## Key features

- Over 1,000 differential diagnoses
- Sign & Symptom index
- Disease Index
- Explore by organ system, symptoms, or diseases
- SmartSearch technology
- Offline access
- 1-year online access with WebView

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| MobileDDx™ Pocket DDx Tool | $4.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/mobileddx-pocket-ddx-tool/id1076514957/reviews.md

### 3/5 — Missing important differentials

*2025-10-03*

Missing WPW, POTS, and others under rapid pulse symptom

**Developer response:** We are sorry to hear this resource did not meet your expectation.  The content for the app comes directly from the publisher and should match the hard cover content.  Please contact support@skyscape.com so that we can address your issue.

## Frequently asked questions about MobileDDx™ Pocket DDx Tool

### What is MobileDDx™ Pocket DDx Tool?

MobileDDx™ Pocket DDx Tool is a medical reference application that helps users make differential diagnoses. It contains over 1,000 medicine and surgery differential diagnoses, organized by symptom, disease, or organ system.

### How much does MobileDDx™ Pocket DDx Tool cost?

The app is free to download and includes sample content. A one-time in-app purchase is required to unlock all of its features and content.

### Does MobileDDx™ Pocket DDx Tool have ads?

Yes, this application contains advertisements. Users can experience the app with ads before deciding to make an in-app purchase for full content access.

### What devices is MobileDDx™ Pocket DDx Tool compatible with?

MobileDDx™ Pocket DDx Tool is available for iPhone, iPad, and iPod devices. It is designed for users aged 17 and older.

### Can I use MobileDDx™ Pocket DDx Tool offline?

Yes, once the initial download is complete, no internet connection is required to access the content. This allows for quick information retrieval at any time.

### How often is MobileDDx™ Pocket DDx Tool updated?

The latest version of MobileDDx™ Pocket DDx Tool is 5.8.5, last updated on November 21, 2025. This indicates regular updates to maintain content and functionality.

### What is the user rating for MobileDDx™ Pocket DDx Tool?

MobileDDx™ Pocket DDx Tool has a strong user rating of 4.4 stars, based on 19 ratings. This suggests a generally positive user experience.

### What is the source of the information in MobileDDx™ Pocket DDx Tool?

The content is based on the 4th Edition of Diagnosaurus and derived from the Current Lange series, providing authoritative and trusted medical information.

## Version history (last 5 releases)

### 5.9.2 — 2026-06-24

We are excited to bring you the latest update to MobileDDx™ - Differential Diagnosis Tool App!
 
This release includes:
- Performance improvements aand bug fixes
- Minor UI enhancements for better learning experience
- Keep practicing and stay confident on your journey toward your professional success!

### 5.8.5 — 2025-11-21

- Minor Bug Fixes

### 5.8.0 — 2025-09-15

- Minor Bug Fixes

### 5.7.4 — 2025-06-20

- Minor bug fixes
- UIUX enhancements

### 4.4.1 — 2020-08-02

Fixes related to connecting to iTunes for in-app purchases in iOS version 13.4 and above

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*