Comparison

DiagnosUs vs Smart AI Quizzer

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

Head to head
About

DiagnosUs

Engage with real medical cases to enhance your diagnostic skills and earn rewards. This educational game is designed for students and professionals to test their knowledge across various specialties and contribute to AI research.

Highlights
  • Analyze diverse medical cases
  • Improve diagnostic skills
  • Earn rewards for participation
  • Contribute to AI research
  • Study for medical exams
  • Regularly updated datasets
Read full description

DiagnosUs is an educational game for medical students, doctors, premed students, other healthcare professionals, and citizen scientists to analyze medical cases, improve their skills, and earn prizes! Participation is open to anyone, regardless of educational background. Players compete against their peers to hone their skills by analyzing cases in our datasets. At the same time, they contribute their knowledge to help advance artificial intelligence research. DiagnosUs is a wonderful supplement for classes, clerkships, and in preparation for exams such as the USMLE® Step 1 & 2 Clinical Knowledge (CK), NBME® exams, MBBS, NCLEX® exams, COMLEX Level 1 & 2, MCAT®, NEET-PG, and many more! The app promotes an engaging, dynamic platform to test anyone’s medical knowledge while simultaneously contributing to the development of crucial machine learning algorithms. Try a wide range of cases in subjects such as radiology, dermatology, USMLE® preparation, MCAT® preparation, NBME® preparation, NCLEX® preparation, ultrasound, neurology, cardiology, ophthalmology, emergency medicine, surgery, internal medicine, pediatrics, orthopedics, family medicine, gastroenterology, pathology, and pulmonology. Utilize the power of DiagnosUs to study interactively! New datasets are added regularly, so players can always keep learning! Learn medicine fast: see a wide range of cases! - Anatomy - Physiology - Auscultation to listen for pulmonary abnormalities - Dermatological images to identify melanoma, basal cell carcinoma, squamous cell carcinoma, psoriasis, dermatitis, and other skin conditions - EEG - EKG / ECG - USMLE® practice questions - MCAT® practice questions - NBME® practice questions - Chest X-rays to look for pneumonia and cancer - Musculoskeletal X-rays - Ultrasound identification problems - Fundus eye images - MRI - Whole Slide Pathology Imagery - Chest CT - Mammograms and much more! The rewards that participants can earn in the app are made possible by our research partners and customers, who are developing artificial intelligence related to image analysis. These research partners and customers subsidize our prizes because our app participants help analyze images from large datasets of our research partners and customers. After participants win rewards, they can tap on the Profile tab and tap on the icon in the top-left corner of the Profile screen. This screen then shows a log of all the participant's rewards, and they can withdraw their rewards to a payment account.

About

Smart AI Quizzer

Features
Read full description

Instant AI Generation: Paste notes, upload documentation, or type a topic to generate professional multiple-choice questions instantly. Global Trivia Challenge: Explore over 10,000+ ready-to-play trivia sets covering history, science, pop culture, and sports. One-Click PDF Export: Download your generated quizzes as clean, beautifully formatted PDFs for printing or offline sharing. Pure Offline Engine: Built with a high-speed local caching engine. Your quiz sets and deep analytics open instantly with zero loading spinners—even completely offline. Smart Exam Simulation: Shuffle questions and randomize options with a single tap to break muscle memory and mimic real exam conditions. Time-Filtered Tracking: Seamlessly filter and track your revision history by creation time to optimize your study path. Minimalist & Private: Light, blazing-fast UI with zero bloatware. Your data stays localized for maximum speed and privacy.

Screenshots

DiagnosUs4 screens
Smart AI Quizzer4 screens

Verdict

The call

The clearest difference is in-app purchases: DiagnosUs at none against Smart AI Quizzer's 2. DiagnosUs also leads on ads (none vs shown) and update cadence (fortnightly vs every 2 months). Smart AI Quizzer's advantage is iOS requirement (13.0 vs 16.0). On price 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. Smart AI Quizzer sells 2 in-app purchases, starting at $6.99 per month. DiagnosUs asks for nothing beyond the download.

UpkeepUpdate frequency

DiagnosUs ships an update fortnightly, Smart AI Quizzer every 2 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
DiagnosUs versus Smart AI Quizzer: the parameters behind the verdict, then further details
ParameterDiagnosUsSmart AI Quizzer
PriceFreeFree
Rating4.8 (1K ratings) — better—
Positive reviews79.4% of reviews—
Number of ratings1K — better—
Update frequencyFortnightly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size42 MB38 MB
Age rating17+12+
DeveloperCentaur LabsANTARES TECHNOLOGY LLC

Bugs and requests

DiagnosUs

Reported bugs

4 issues
  • App crashes and freezes
  • Inaccurate or inconsistent grading of answers
  • Withdrawal and payment issues for some users
  • Compatibility problems with certain devices and OS versions

Requested features

5 requests
  • More diverse medical topics and case studies
  • Separate competitions for students vs. professionals
  • Ability to discuss and provide feedback on cases
  • Improved instructions and explanations
  • Compatibility with older devices and iOS versions

Smart AI Quizzer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

DiagnosUs

No in-app purchases

2 purchases

Smart AI Quizzer

Subscriptions2
  • Standard Plan$6.991 Month
  • Premium Plan$12.991 Month

Questions

Is DiagnosUs free?
DiagnosUs is free to download, with no in-app purchases.
Is Smart AI Quizzer free?
Smart AI Quizzer is free to download, with in-app purchases available.
Do DiagnosUs or Smart AI Quizzer have ads?
Smart AI Quizzer shows ads; DiagnosUs does not.
Which is updated more often, DiagnosUs or Smart AI Quizzer?
DiagnosUs ships an update fortnightly, and Smart AI Quizzer every 2 months. Most recently, DiagnosUs was updated on November 2, 2026 and Smart AI Quizzer on November 5, 2026.

Other comparisons