Comparison

Guide to Diagnostic Tests vs MobileDDx™ Pocket DDx Tool

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Guide to Diagnostic Tests

Access evidence-based information on over 450 diagnostic tests, including lab work, imaging, and therapeutic monitoring. This resource helps healthcare professionals quickly find answers to common questions about test selection, interpretation, and patient preparation.

Highlights
  • 450+ diagnostic tests
  • Evidence-based recommendations
  • Algorithms, tables, and charts
  • PubMed links
  • Custom notes and highlighting
  • Full-text search
  • Favorites for bookmarking
Features
Read full description

ABOUT GUIDE TO DIAGNOSTIC TESTS Pocket Guide to Diagnostic Tests, provides immediate, evidence-based information on the selection and interpretation of commonly used laboratory and electrocardiographic tests, diagnostic imaging, and therapeutic monitoring. Including more than 450 updated diagnostic tests, this mobile resource is ideal for answering questions encountered daily by physicians, nurses, students, and other healthcare professionals, such as: • Which test is best to diagnose or follow a patient’s condition? • What is the correct interpretation of an abnormal diagnostic test? • How do I collect the appropriate specimen or prepare the patient for testing? • Where can I find more information on this test in the medical literature? FEATURES • 450+ updated laboratory and diagnostic tests • Evidence-based recommendations • New and updated coverage of emerging and re-emerging pathogens and infectious agents • Extensive use of algorithms, tables, and charts • PubMed links directly to journal citations and available articles • Highlight and make custom notes within any entry • Full Text Search – find topics across from any entry • ‘Favorites’ for bookmarking important entries Editors: Diana Nicoll, MD, PhD, MPA; Chuanyi Mark Lu, MD; Stephen J. McPhee, MD Publisher: McGraw Hill Powered by: Unbound Medicine

About

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.

Highlights
  • 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
Features
Read full description

"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.

Screenshots

Guide to Diagnostic Tests4 screens
MobileDDx™ Pocket DDx Tool4 screens

Verdict

The call

The clearest difference is ads: Guide to Diagnostic Tests at none against MobileDDx™ Pocket DDx Tool's shown. Guide to Diagnostic Tests also leads on rating (4.6 vs 4.4). MobileDDx™ Pocket DDx Tool's advantage is iOS requirement (13.0 vs 15.0). On price, review sentiment, ratings volume and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and MobileDDx™ Pocket DDx Tool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Guide to Diagnostic Tests holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 35 and 19 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Guide to Diagnostic Tests ships an update every 9 months, MobileDDx™ Pocket DDx Tool every 5 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
Guide to Diagnostic Tests versus MobileDDx™ Pocket DDx Tool: the parameters behind the verdict, then further details
ParameterGuide to Diagnostic TestsMobileDDx™ Pocket DDx Tool
PriceFreeFree
Rating4.6 (35 ratings) — better4.4 (19 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings35 — better19
Update frequencyEvery 9 monthsEvery 5 months — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size10 MB48 MB
Age rating17+17+
DeveloperUnbound Medicine, Inc.Skyscape Medpresso Inc

Customer experience

Guide to Diagnostic Tests

All ratings35 ratings
Positive88.6%
Neutral5.7%
Negative5.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

MobileDDx™ Pocket DDx Tool

All ratings19 ratings
Positive78.9%
Neutral10.5%
Negative10.5%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

Guide to Diagnostic Tests

One-time1
  • Pocket Guide to Diagnostic Tests$54.99
1 purchases

MobileDDx™ Pocket DDx Tool

One-time1
  • MobileDDx™ Pocket DDx Tool$4.99

Questions

Is Guide to Diagnostic Tests free?
Guide to Diagnostic Tests is free to download, with in-app purchases available.
Is MobileDDx™ Pocket DDx Tool free?
MobileDDx™ Pocket DDx Tool is free to download, with in-app purchases available.
Which has better reviews, Guide to Diagnostic Tests or MobileDDx™ Pocket DDx Tool?
Guide to Diagnostic Tests is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while MobileDDx™ Pocket DDx Tool averages 4.4 from 19 ratings.
Do Guide to Diagnostic Tests or MobileDDx™ Pocket DDx Tool have ads?
MobileDDx™ Pocket DDx Tool shows ads; Guide to Diagnostic Tests does not.
Which is updated more often, Guide to Diagnostic Tests or MobileDDx™ Pocket DDx Tool?
Guide to Diagnostic Tests ships an update every 9 months, and MobileDDx™ Pocket DDx Tool every 5 months. Most recently, Guide to Diagnostic Tests was updated on November 6, 2026 and MobileDDx™ Pocket DDx Tool on November 2, 2026.

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