# Cross Do Ku vs Space Bubble Puzzle

The clearest difference is in-app purchases: Space Bubble Puzzle at none against Cross Do Ku's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cross Do Ku sells 6 one-off in-app purchases. Space Bubble Puzzle asks for nothing beyond the download.

Cross Do Ku ships an update every 3 weeks, Space Bubble Puzzle monthly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Cross Do Ku | Space Bubble Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (92 ratings)](https://appshunter.io/ios/app/cross-do-ku/id1457850088/reviews)** | — |
| Number of ratings | **92** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 129 MB | 136 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [lee seung joo](https://appshunter.io/developer/1446223476) | [Yuta Kamiya](https://appshunter.io/developer/1760454275) |

## What reviewers say

### Cross Do Ku

[App page](https://appshunter.io/ios/app/cross-do-ku/id1457850088)

A new line drawing puzzle game where you fill grids by drawing horizontal or vertical lines. It offers 8 distinct modes and over 1200 challenging levels to test your logic and spatial reasoning skills.

**Highlights:** Draw horizontal or vertical lines, Fill all grids, 8 game modes, 1200+ levels, New line drawing puzzle

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hint x 20 | $0.99 | one-time |
| Remove ads | $2.99 | one-time |
| 30 hints | $2.99 | one-time |
| Hint x 70 | $2.99 | one-time |
| 60 hints | $4.99 | one-time |
| Hint x 150 | $5.99 | one-time |


### Space Bubble Puzzle

[App page](https://appshunter.io/ios/app/space-bubble-puzzle/id6596733728)

**In-app purchases:** none


## Frequently asked questions

### Is Cross Do Ku free?

Cross Do Ku is free to download, with in-app purchases available.

### Is Space Bubble Puzzle free?

Space Bubble Puzzle is free to download, with no in-app purchases.

### Do Cross Do Ku or Space Bubble Puzzle have ads?

Both Cross Do Ku and Space Bubble Puzzle show ads.

### Which is updated more often, Cross Do Ku or Space Bubble Puzzle?

Cross Do Ku ships an update every 3 weeks, and Space Bubble Puzzle monthly. Most recently, Cross Do Ku was updated on November 2, 2026 and Space Bubble Puzzle on November 4, 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.*