Comparison

Ferri's Best Test vs CRDx Academy

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

Head to head
About

Ferri's Best Test

This medical reference app provides guidance on laboratory and imaging approaches for over 400 tests and 230 diseases. It features interactive flowcharts, IU units, and concise clinical material to aid in test selection and diagnostic skills.

Highlights
  • Over 400+ tests and labs
  • Guidance on radio-logic & laboratory approaches
  • 230+ common diseases
  • Interactive flowcharts
  • IU units for all tests
  • SmartSearch technology
Features
Read full description

"Try before you buy" - Download the FREE App, which includes sample content. An in-App purchase is required to unlock all content. Based on 4th print ed. Guidance on radio-logic & laboratory approaches. Over 400+ tests & labs. 230+ common diseases. Interactive flowcharts. IU units for all tests. Practical and concise, go-to reference for up-to-date clinical material on today's diagnostic testing and laboratory tests. Three convenient sections provide quick access to key information on clinical laboratory testing, diagnostic imaging, and diagnostic algorithms. Experienced author Dr. Fred Ferri uses a unique, easy-to-follow format to simplify complex information and help you choose the best test to supplement your clinical diagnostic skills. New to this Edition * Features a new appendix on when to use contrast agents in ordering CT and MRI scans. * Discusses new modalities including transient elastography (Fibroscan), CT enterography and CT enteroclysis. * Provides new comparison tables to easily evaluate the best test; new algorithms for evaluation of immunodeficiency and hematochezia; and new tables and illustrations throughout to improve your test selection. Key Features * Includes both lab and imaging tests for concise, convenient access to all diagnostic test options for more than 200 common diseases and disorders. * Includes essential information on indications, advantages, disadvantages, approximate costs, normal ranges, typical abnormalities, likeliest causes, and more. 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. Content licensed from printed ISBN 10: 0323511406 Content licensed from printed ISBN 13: 9780323511407 If you have any questions or comments, email us any time: customersupport@skyscape.com or call 508-299-30000 Privacy Policy-https://www.skyscape.com/terms-of-service/privacypolicy.aspx Terms and Conditions-https://www.skyscape.com/terms-of-service/licenseagreement.aspx Editor(s): Fred F. Ferri, MD, FACP Publisher: Mosby | Elsevier, Inc.

About

CRDx Academy

Features
Read full description

CRDx Academy App delivers accredited Continuing Medical Education (CME) and Continuing Professional Development (CPD) in Clinical Diagnostics for healthcare professionals. Designed for laboratory specialists, clinical pathologists, and healthcare practitioners, CRDx Academy App provides structured, evidence-based medical education to support professional competency and advance clinical knowledge. The platform focuses exclusively on accredited Clinical Diagnostics CME and CPD courses tailored to real-world laboratory and clinical practice environments. Key Features: • Access accredited CME and CPD courses anytime, anywhere • Learn through expert-led modules in Clinical Diagnostics • Review structured, evidence-based medical education content • Complete assessments and monitor your learning progress • Stay updated with advances in laboratory medicine and diagnostic sciences • Synchronize learning seamlessly across devices CRDx Academy App is dedicated exclusively to healthcare professional education and does not provide patient-specific medical advice. Advance your expertise in Clinical Diagnostics through structured, accredited CME and CPD designed for healthcare professionals.

Screenshots

Ferri's Best Test4 screens
CRDx Academy4 screens

Verdict

The call

The clearest difference is ads: CRDx Academy at none against Ferri's Best Test's shown. CRDx Academy also leads on update cadence (every 2 months vs every 6 months). Ferri's Best Test's advantage is iOS requirement (13.0 vs 15.2). On price, in-app purchases and device support 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. Ferri's Best Test sells 1 one-off in-app purchase and CRDx Academy sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ferri's Best Test ships an update every 6 months, CRDx Academy every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 6 level
Ferri's Best Test versus CRDx Academy: the parameters behind the verdict, then further details
ParameterFerri's Best TestCRDx Academy
PriceFreeFree
Rating4.8 (26 ratings) — better—
Number of ratings26 — better—
Update frequencyEvery 6 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.2
Further details — not scored
Size149 MB110 MB
Age rating17+4+
DeveloperSkyscape Medpresso IncCredit Hours

In-app purchases

1 purchases

Ferri's Best Test

One-time1
  • Ferri's Best Test - Lab & Diag$40.99
2 purchases

CRDx Academy

One-time2
  • Measurement of HbA1c in DMFree
  • Science of RBC MorphologyFree

Questions

Is Ferri's Best Test free?
Ferri's Best Test is free to download, with in-app purchases available.
Is CRDx Academy free?
CRDx Academy is free to download, with in-app purchases available.
Do Ferri's Best Test or CRDx Academy have ads?
Ferri's Best Test shows ads; CRDx Academy does not.
Which is updated more often, Ferri's Best Test or CRDx Academy?
Ferri's Best Test ships an update every 6 months, and CRDx Academy every 2 months. Most recently, Ferri's Best Test was updated on October 24, 2026 and CRDx Academy on October 28, 2026.

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