Comparison

DiagnosUs vs AyaPrep

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

AyaPrep

Features
Read full description

AyaPrep is an app specially designed by AyaPrep Limited to make learning easier for students. It primarily uses video tutorials to instruct students in their native languages. This has been proven to enhance the understanding of what is being taught to the students especially in mathematics. It is designed with the goal of helping junior high and senior high school students grasp basic mathematical concepts for better results in their exams. This version of the app focuses on the subject math, with use of three native languages, Twi, Ewe and Ga Find our terms of use here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/specially And our privacy policy here: https://pages.flycricket.io/ayaprep/privacy.html

Screenshots

DiagnosUs4 screens
AyaPrep4 screens

Verdict

The call

The clearest difference is in-app purchases: DiagnosUs at none against AyaPrep's 6. DiagnosUs also leads on update cadence (fortnightly vs every 2 months). AyaPrep's advantage is iOS requirement (13.0 vs 16.0). On price, 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

Both are free to download. AyaPrep sells 6 in-app purchases, starting at $3.00 per month. DiagnosUs asks for nothing beyond the download.

UpkeepUpdate frequency

DiagnosUs ships an update fortnightly, AyaPrep every 2 months. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
DiagnosUs versus AyaPrep: the parameters behind the verdict, then further details
ParameterDiagnosUsAyaPrep
PriceFreeFree
Rating4.8 (1K ratings) — better—
Positive reviews79.4% of reviews—
Number of ratings1K — better—
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size42 MB53 MB
Age rating17+12+
DeveloperCentaur LabsAyaprep Limited

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

AyaPrep

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

DiagnosUs

No in-app purchases

6 purchases

AyaPrep

Subscriptions6
  • SHS - 1 MONTH SUBSCIPTION$3.001 Month
  • SHS - 3 MONTHS SUBSCRIPTION$5.003 Months
  • JHS - 6 MONTHS SUBSCRIPTION$7.006 Months
Show 3 more
  • SHS - 6 MONTHS SUBSCRIPTION$8.006 Months
  • SHS - 1 YEAR SUBSCRIPTION$10.001 Year
  • JHS - 1 YEAR SUBCRIPTION$12.001 Year

Questions

Is DiagnosUs free?
DiagnosUs is free to download, with no in-app purchases.
Is AyaPrep free?
AyaPrep is free to download, with in-app purchases available.
Do DiagnosUs or AyaPrep have ads?
Neither DiagnosUs nor AyaPrep shows ads.
Which is updated more often, DiagnosUs or AyaPrep?
DiagnosUs ships an update fortnightly, and AyaPrep every 2 months. Most recently, DiagnosUs was updated on September 24, 2026 and AyaPrep on September 19, 2026.

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