MobileDDx™ Pocket DDx Tool vs Digi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MobileDDx™ Pocket DDx Tool
This medical reference tool provides over 1,000 differential diagnoses for medicine and surgery. It allows users to explore conditions by organ system, symptoms, or diseases, and includes 1-year online access. Powerful search technology enables quick information retrieval without an internet connection after initial download.
- 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
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"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.
Digi
Practice diagnostic reasoning with simulated patient cases. Make informed decisions on diagnostic tests and patient management, comparing your efficiency and cost to experienced clinicians. Learn from feedback and access relevant literature.
- Simulated patient cases
- Diagnostic test selection
- Patient management choices
- Cost comparison to experts
- Clinical feedback
- Hyperlinks to literature
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This app is designed for early clinicians to practice using diagnostic testing to arrive at a simulated patient's diagnosis. Patient histories are provided - the goal of playing is to choose diagnostic tests to get to the right diagnosis as efficiently as possible. Each test accrues additional expense, and users can compare their costs to that of the experienced clinician. Just as in real life, making incorrect choices still provides valuable learning as feedback from experienced clinicians follows diagnosis selections. In addition, some cases will also provide opportunity for making choices in patient management, with clinical feedback provided for all selections. Hyperlinks to relevant literature are included for easy access to further information. Once diagnosis is made, users will have opportunity to provide specific feedback through a survey link - we hope you'll fill it out and help faculty make this as useful a learning tool as possible! This app was built through a partnership between Jump Simulation and faculty from the University of Illinois College of Medicine.
Screenshots
Verdict
The clearest difference is rating: MobileDDx™ Pocket DDx Tool at 4.4 against Digi's 3.7. MobileDDx™ Pocket DDx Tool also leads on ratings volume (19 vs 3). Digi's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. MobileDDx™ Pocket DDx Tool sells 1 one-off in-app purchase. Digi asks for nothing beyond the download.
MobileDDx™ Pocket DDx Tool holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: MobileDDx™ Pocket DDx Tool has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.
MobileDDx™ Pocket DDx Tool ships an update every 5 months, Digi every 2 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | MobileDDx™ Pocket DDx Tool | Digi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (19 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 19 — better | 3 |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 95 MB |
| Age rating | 17+ | 12+ |
| Developer | Skyscape Medpresso Inc | OSF Healthcare System |
Customer experience
MobileDDx™ Pocket DDx Tool
Digi
In-app purchases
MobileDDx™ Pocket DDx Tool
- MobileDDx™ Pocket DDx Tool$4.99
Digi
No in-app purchases
Questions
Is MobileDDx™ Pocket DDx Tool free?
Is Digi free?
Which has better reviews, MobileDDx™ Pocket DDx Tool or Digi?
Do MobileDDx™ Pocket DDx Tool or Digi have ads?
Which is updated more often, MobileDDx™ Pocket DDx Tool or Digi?
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