# Bubble Sort Merge vs Kitty Pop

The clearest difference is update cadence: Kitty Pop at every 5 days against Bubble Sort Merge's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bubble Sort Merge ships an update every 10 days, Kitty Pop every 5 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | Bubble Sort Merge | Kitty Pop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 5 days** |
| Size | 396 MB | 183 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [META KINGDOM LIMITED](https://appshunter.io/developer/1629613295) | [TRAN DUC NGHIA](https://appshunter.io/developer/6812159916) |

## What reviewers say

### Bubble Sort Merge

[App page](https://appshunter.io/ios/app/bubble-sort-merge/id6777954843)

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

**In-app purchases:** none


### Kitty Pop

[App page](https://appshunter.io/ios/app/kitty-pop-cat-match-puzzle/id6824446030)

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Sort Merge free?

Bubble Sort Merge is free to download, with no in-app purchases.

### Is Kitty Pop free?

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

### Do Bubble Sort Merge or Kitty Pop have ads?

Both Bubble Sort Merge and Kitty Pop show ads.

### Which is updated more often, Bubble Sort Merge or Kitty Pop?

Bubble Sort Merge ships an update every 10 days, and Kitty Pop every 5 days. Most recently, Bubble Sort Merge was updated on November 10, 2026 and Kitty Pop on November 10, 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.*