# CYE App vs Disease Dynamics

The clearest difference is in-app purchases: CYE App at none against Disease Dynamics's 1. CYE App also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Disease Dynamics sells 1 one-off in-app purchase. CYE App asks for nothing beyond the download.

CYE App ships an update every 2 days, Disease Dynamics fortnightly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CYE App | Disease Dynamics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Size | 161 MB | 50 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [benjy copeland](https://appshunter.io/developer/1838793250) | [King of the Curve, LLC](https://appshunter.io/developer/1534662920) |

## What reviewers say

### CYE App

[App page](https://appshunter.io/ios/app/cye-app/id6755295022)

**Features:** macOS Compatibility

**In-app purchases:** none


### Disease Dynamics

[App page](https://appshunter.io/ios/app/disease-dynamics/id6788222764)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reanimation Protocol | $1.99 | one-time |


## Frequently asked questions

### Is CYE App free?

CYE App is free to download, with no in-app purchases.

### Is Disease Dynamics free?

Disease Dynamics is free to download, with in-app purchases available.

### Do CYE App or Disease Dynamics have ads?

Neither CYE App nor Disease Dynamics shows ads.

### Which is updated more often, CYE App or Disease Dynamics?

CYE App ships an update every 2 days, and Disease Dynamics fortnightly. Most recently, CYE App was updated on October 25, 2026 and Disease Dynamics on October 24, 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.*