# DiagnosUs — See real cases & earn rewards

> Educational medical case analysis game with rewards and AI research contribution. (iPhone/iPad app by Centaur Labs.)

- Source: https://appshunter.io/ios/app/diagnosus/id1369759559 (this page in markdown: same URL + `.md`)
- Developer: [Centaur Labs](https://appshunter.io/developer/1369759558)
- Category: Education, Games
- Price: Free
- Rating: 4.80/5 from 1,013 App Store ratings · 228 written reviews indexed
- Age rating: 17+
- Requires: iOS 16.0 · 42 MB
- Languages: American English
- Released: 2018-08-06
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/diagnosus/id1369759559/reviews.md

## What is DiagnosUs?

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.

## Key features

- Analyze diverse medical cases
- Improve diagnostic skills
- Earn rewards for participation
- Contribute to AI research
- Study for medical exams
- Regularly updated datasets

## What do users think of DiagnosUs?

Overall sentiment: positive

**Pros**

- 💰 Earn money while learning
- 🧠 Helpful for medical students and professionals
- 🤓 Interesting and educational content
- 👍 Fun and engaging app
- 🤝 Responsive and helpful support team

**Cons**

- 🐛 Bugs and technical issues (crashes, freezes, slow loading)
- ⏱️ Time-consuming to compete and earn rewards
- 🤖 Inconsistent or inaccurate AI-graded answers
- 🤑 Difficult to earn significant amounts of money
- 🔒 Withdrawal issues for some countries

**Commonly reported bugs**

- 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

**Most requested features**

- 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

## Recent user reviews (10 of 228)

All indexed reviews: https://appshunter.io/ios/app/diagnosus/id1369759559/reviews.md

### 2/5 — Huh

*2026-07-21, version 3.68.8*

Lot of work to start playing a game relative to how easy it was to sign up

### 1/5 — WASTE OF TIME

*2026-04-04*

I’ve used this app for 4 years and this is my first time writing a review. This app rewards memorization rather than accuracy. Too often you can provide the correct case outcome yet the system marks it wrong even when the mistake is clearly on their side. You end up wasting hours trying to be precise only to be penalized by obvious system errors. It’s also obvious that long time users dominate the leaderboard all the time, not because they are accurate but because they’ve memorized the app’s flawed answers. They play along with the broken system, sometimes even coordinating in groups or using multiple accounts which keeps them on top. For new users, earning anything meaningful is nearly impossible. Unless you’re one of the players recycling accounts, you will barely make progress. If you’re new DON’T WASTE YOUR TIME. You will struggle to earn fairly in this system especially streaks.

### 4/5 — Ratings

*2026-02-23, version 3.67.55*

It’s fun especially as a nursing student im practicing through this app but there are so many times where the cases doesn’t have answers or maybe wrong answers

### 5/5 — Love

*2026-01-15, version 3.67.54*

Love it

### 1/5 — Waste of time

*2025-12-25, version 3.67.54*

I really think the questions are like near impossible to get right, and definitely near impossible to get a streak. I only got 50 cents after days of trying and I couldn’t even verify my identity to withdraw because the app kept crashing when I tried…

### 5/5 — An Amazing App!!

*2025-12-21, version 3.67.54*

I usually don’t write reviews often, but I feel that it’s important that I write one for this app. I was skeptical at giving this app a try and not sure what to expect, but now I feel comfortable to share what I thought of DiagnosUs.

I really enjoyed this app and how it actually cashes out a good amount of money you earn! But it also gives you good knowledge on medicine and health, rather than most apps that only give you stress and brain rot. My most favorite were participating in the Health Info Identification contest, a little tough at first, but gets easy as you try more than once. I work at a Vet office, not the same, I know, but I did recognize some things in it. Although you don’t need to be in Medical School or work in the medical field to give this app a try.

As for cashing out, most apps would get you to earn $1.00 to $5.00 most, but after using this app, I was able to cash out twice with $40.00 to $140.00 to my PayPal, and that is the most I ever gotten in an app! Which is insane!

I really happy that I found this app and want to thank the developers of this app for creating this.

### 1/5 — Повністю платний додаток

*2025-12-16, version 3.67.53*

Якщо раніше було все безкоштовно то зараз немає жодного сенсу платити кошти бо за такі кошти можна сходити на коніеренції, майстер класи, вебінари і тд, і навчитись набагато більшому з живими людьми.

### 5/5 — Unfair app

*2025-11-22*

Honestly I find the app to be so inconsistent. They’re giving points out randomly and there is no mathematical explanation to the way they grade things. For some questions they will underline an answer a certain way and then for the next question they’ll underline it another way and it causes you to lose points and penalises you. Different users get different questions and it’s unfair how one person only needs to answer 2 graded questions while another has to answer multiple graded questions. Some users will get easier questions compared to others. Overall an unfair app with unfair grading. They need to work on consistency.

### 5/5 — Fantastic

*2025-07-02*

I love love LOVE this app. I love that I do not have to be a med student to use the app and compete. I also love that while earning I am also learning. It’s a win-win. My only complaint is the number of contribution questions as opposed to questions we are actually graded for seems to be in excess. Also, I’ve found incorrect graded cases which is extremely frustrating especially in a competition when you know the answer you gave to be correct yet you lose score because the platform (or AI maybe?) got it wrong. So sometimes you may lose a competition you should have won. Overall I have faith that the team over this project work diligently to make every competition fair and prevent mistakes. Unfortunately, we are human and perfection is not always possible. Excellent app and ty for the extra much needed $ I’ve been able to earn here.

### 1/5 — Doesn’t work

*2025-06-24, version 3.67.41*

Useless

## Frequently asked questions about DiagnosUs

### What is DiagnosUs?

DiagnosUs is an educational game where users can analyze real medical cases to improve their diagnostic skills. It's designed for medical students, doctors, and other healthcare professionals, offering a dynamic platform to test medical knowledge while contributing to AI research.

### What kind of medical cases can I analyze?

The app features a wide range of cases across numerous specialties including radiology, dermatology, cardiology, neurology, emergency medicine, pediatrics, and more. It covers various image types like X-rays, MRIs, CT scans, and pathology slides, as well as topics like anatomy, physiology, and EKG/EEG analysis.

### Can I earn rewards with DiagnosUs?

Yes, participants can earn rewards for their contributions. These rewards are made possible by research partners and customers who subsidize prizes in exchange for the analysis of images from their datasets. Rewards can be withdrawn to a payment account.

### Is this app suitable for exam preparation?

Absolutely. DiagnosUs is a great supplement for classes and preparation for various medical exams, including USMLE® Step 1 & 2, NBME® exams, NCLEX®, COMLEX Level 1 & 2, MCAT®, and NEET-PG. It provides practice questions and case analyses relevant to these tests.

### Who can participate in DiagnosUs?

Participation is open to anyone, regardless of their educational background. This includes medical students, doctors, premed students, other healthcare professionals, and citizen scientists who are interested in learning about medicine or contributing to AI research.

## Version history (last 5 releases)

### 3.68.12 — 2026-08-24

- Small UI fix

### 3.68.11 — 2026-08-13

- New UX for video annotation

### 3.68.10 — 2026-07-30

- UI bug fix

### 3.68.9 — 2026-07-27

- Improved user support UX
- Minor bug fixes

### 3.68.8 — 2026-06-29

- Security and maintenance changes

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*