# DiagnosUs vs AyaPrep

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.

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

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

## The numbers

| Metric | DiagnosUs | AyaPrep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1K ratings)](https://appshunter.io/ios/app/diagnosus/id1369759559/reviews)** | — |
| Number of ratings | **1K** | — |
| Positive reviews | 79.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 53 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Centaur Labs](https://appshunter.io/developer/1369759558) | [Ayaprep Limited](https://appshunter.io/developer/1759867940) |

## What reviewers say

### DiagnosUs

[App page](https://appshunter.io/ios/app/diagnosus/id1369759559)

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**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

**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


### AyaPrep

[App page](https://appshunter.io/ios/app/ayaprep/id6584530134)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SHS - 1 MONTH SUBSCIPTION | $3.00 | per month |
| SHS - 3 MONTHS SUBSCRIPTION | $5.00 | per 3 months |
| JHS - 6 MONTHS SUBSCRIPTION | $7.00 | per 6 months |
| SHS - 6 MONTHS SUBSCRIPTION | $8.00 | per 6 months |
| SHS - 1 YEAR SUBSCRIPTION | $10.00 | per year |
| JHS - 1 YEAR SUBCRIPTION | $12.00 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*