# STOP vs Evil Ducks Castle

The clearest difference is price: STOP at Free against Evil Ducks Castle's $0.99. STOP also leads on update cadence (every 10 days vs every 37 months). Evil Ducks Castle's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

STOP is free to download; Evil Ducks Castle costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

STOP ships an update every 10 days, Evil Ducks Castle every 37 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | STOP | Evil Ducks Castle |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 37 months |
| Size | 30 MB | 21 MB |
| Requires iOS | **12.0** | 12.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [Anthony Hindle](https://appshunter.io/developer/1057765652) |

## What reviewers say

### STOP

[App page](https://appshunter.io/ios/app/stop-cell-pandemic/id860160123)

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

**In-app purchases:** none


### Evil Ducks Castle

[App page](https://appshunter.io/ios/app/evil-ducks-castle/id1117589870)

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

**In-app purchases:** none


## Frequently asked questions

### Is STOP free?

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

### Is Evil Ducks Castle free?

Evil Ducks Castle costs $0.99, with no in-app purchases.

### Do STOP or Evil Ducks Castle have ads?

STOP shows ads; Evil Ducks Castle does not.

### Which is updated more often, STOP or Evil Ducks Castle?

STOP ships an update every 10 days, and Evil Ducks Castle every 37 months. Most recently, STOP was updated on November 1, 2026 and Evil Ducks Castle on November 2, 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.*