Comparison

MCQS vs MedDiffDx

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

Head to head
About

MCQS

Prepare for a wide range of exams with multiple-choice questions and detailed explanations. Offers both free basic access and a premium subscription for unlimited questions, audio, animated, and video content.

Highlights
  • Multiple choice questions for various exams
  • Instant feedback and explanations
  • Adaptive difficulty matching user knowledge
  • Spaced repetition algorithm
  • Premium subscription for advanced content
  • Audio, animated, and video explanations
Features
Read full description

Provides Multiple Choice Questions (MCQS) for many exams. Includes questions for Medical exams such as the USMLE Step 1, USMLE Step 2, MRCP Part 1, PLAB, FRCR part 1 Image Viewing and FRCR Rapid Reporting exam, FRCR Physics, FRCR part 2a. Also includes questions for Software Certs, such as the Java SE 7 Programmer, Microsoft Exam 70-480: Programming in HTML5 with Javascript and CSS3, Zend Certified PHP Engineer and Linux Professional Institute exams including the Linux Essentials exam. We have now introduced questions at Junior and Secondary levels, such as the Irish Junior and Leaving Certificate, as well as the UK Ordinary and Advanced level exams in Maths, Physics, Chemistry and Biology. Easy one-step log-in using Apple or Google log-ins or your own username. Free Features: - Access to basic questions in the topic of your choice - Instant feedback on each question - Questions get harder as you get better so you are always challenged - Accurate estimation of your exam level and chance of success - Basic explanations for each question Premium Features (Monthly Subscription): - Unlimited access to our complete question bank - Audio explanations for complex topics - Animated explanations for better understanding - Video content for selected questions - Advanced spaced repetition algorithm - Targeted questions that address your weaknesses Every question has a relevant explanation that will teach you what you need to know to answer that question correctly the next time round. As you progress, the question difficulty will match your knowledge. MCQS matches your abilities, so you will find tougher questions as you improve. Our algorithm also makes use of spaced repetition to make sure you retain what you've learned. This application is subject to the standard Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

MedDiffDx

Features
Read full description

MedDiffDx is an educational resource designed for medical students, trainees, and educators who want to strengthen their understanding of internal medicine and the principles of differential diagnosis. The app provides a structured study framework for approaching clinical problems based on presenting symptoms. Diseases are grouped by mechanisms, organ systems, or affected structures, following a style similar to how internal medicine specialists are trained to think. This organizational method makes complex material easier to understand, remember, and apply during study and discussion. Unlike a traditional reference book that focuses on detailed descriptions of individual conditions, MedDiffDx emphasizes the reasoning process of grouping and distinguishing diseases. This focus helps learners recognize important patterns and develop critical thinking skills that are valuable in medical education. Key Features • Symptom-based approach to exploring disease categories • Grouping of conditions by mechanism, organ system, or clinical features • Educational notes that highlight essential points for study • A framework inspired by the way internal medicine physicians are trained to organize differential diagnoses • Simple one-time purchase with access to all content — no subscription required Disclaimer MedDiffDx is intended for educational purposes only. The app does not provide medical advice, diagnosis, or treatment, and must not be used as a substitute for professional healthcare. Users should not rely on the app for managing real patients. All medical decisions should be made in consultation with qualified healthcare professionals. Future Development Our goal is to continuously update MedDiffDx, expanding the educational content and refining the user experience. We aim for the app to become one of the most useful study companions for learners of internal medicine worldwide. Feedback We value your input. If you have suggestions for improving the app — whether adding new presenting symptoms, refining existing content, or enhancing the interface — please contact us directly. Your feedback helps us improve MedDiffDx and ensure it remains a trusted educational tool for medical learners. Thank you for supporting MedDiffDx. We are committed to making it the best possible study resource for internal medicine.

Screenshots

MCQS4 screens
MedDiffDx4 screens

Verdict

The call

The clearest difference is price: MCQS at Free against MedDiffDx's $3.99. MCQS also leads on iOS requirement (13.4 vs 16). MedDiffDx's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs every 2 weeks). On ads 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

MCQS is free to download; MedDiffDx costs $3.99 up front. MCQS sells 1 in-app purchase, starting at $8.99 per month. MedDiffDx asks for nothing beyond the download.

UpkeepUpdate frequency

MCQS ships an update every 2 weeks, MedDiffDx every 6 days. The most recent releases landed on October 3, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
MCQS versus MedDiffDx: the parameters behind the verdict, then further details
ParameterMCQSMedDiffDx
PriceFree — better$3.99
Rating4.0 (5 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.4 — better16
Further details — not scored
Size29 MB6 MB
Age rating12+12+
Developermartin schranzworawit tantaopas

In-app purchases

1 purchases

MCQS

Subscriptions1
  • Unlimited access$8.991 Month
None

MedDiffDx

No in-app purchases

Questions

Is MCQS free?
MCQS is free to download, with in-app purchases available.
Is MedDiffDx free?
MedDiffDx costs $3.99, with no in-app purchases.
Do MCQS or MedDiffDx have ads?
Neither MCQS nor MedDiffDx shows ads.
Which is updated more often, MCQS or MedDiffDx?
MCQS ships an update every 2 weeks, and MedDiffDx every 6 days. Most recently, MCQS was updated on October 3, 2026 and MedDiffDx on October 17, 2026.

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