# Rummy Castle vs CatStack!

The clearest difference is in-app purchases: CatStack! at none against Rummy Castle's 6. CatStack! also leads on ads (none vs shown). Rummy Castle's advantage is iOS requirement (13.0 vs 18.5). On price and device support there is nothing between them.

Both are free to download. Rummy Castle sells 6 one-off in-app purchases. CatStack! asks for nothing beyond the download.

## The numbers

| Metric | Rummy Castle | CatStack! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Size | 249 MB | 42 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Haeji Jang](https://appshunter.io/developer/1531494141) | [TAKURO INOUE](https://appshunter.io/developer/1806841917) |

## What reviewers say

### Rummy Castle

[App page](https://appshunter.io/ios/app/rummy-castle-number-matching/id6740237113)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Shuffle Skills | $1.99 | one-time |
| 10 Extra Slot Skills | $1.99 | one-time |
| 10 Corgi Skills | $1.99 | one-time |
| 10 Undo Skills | $1.99 | one-time |
| Skill Package | $1.99 | one-time |
| No Ads | $5.99 | one-time |


### CatStack!

[App page](https://appshunter.io/ios/app/catstack/id6747741193)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rummy Castle free?

Rummy Castle is free to download, with in-app purchases available.

### Is CatStack! free?

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

### Do Rummy Castle or CatStack! have ads?

Rummy Castle shows ads; CatStack! does not.

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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.*