# Collapse vs i.Sudoku

The clearest difference is in-app purchases: i.Sudoku at none against Collapse's 5. Collapse's advantage is update cadence (every 7 months vs every 36 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Collapse sells 5 one-off in-app purchases. i.Sudoku asks for nothing beyond the download.

Collapse ships an update every 7 months, i.Sudoku every 36 months. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Collapse | i.Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/collapse-block-puzzles/id1181806373/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 7 months** | Every 36 months |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 60 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tapotap](https://appshunter.io/developer/1463158372) | [kanjana burapasatit](https://appshunter.io/developer/642164107) |

## What reviewers say

### Collapse

[App page](https://appshunter.io/ios/app/collapse-block-puzzles/id1181806373)

Navigate a ball through increasingly complex mazes, ensuring every square is visited before reaching the exit. Utilize hints or skip levels when you encounter challenges. Test your puzzle-solving skills as you advance through numerous stages.

**Highlights:** Maze navigation, Visit every square, Increasing difficulty, Hint system, Level skipping

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack 1 | $0.99 | one-time |
| Skip level | $0.99 | one-time |
| Pack 2 | $3.99 | one-time |
| Pack 3 | $6.99 | one-time |
| Pack 4 | $11.99 | one-time |


### i.Sudoku

[App page](https://appshunter.io/ios/app/isudoku/id1526281440)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Collapse free?

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

### Is i.Sudoku free?

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

### Do Collapse or i.Sudoku have ads?

Both Collapse and i.Sudoku show ads.

### Which is updated more often, Collapse or i.Sudoku?

Collapse ships an update every 7 months, and i.Sudoku every 36 months. Most recently, Collapse was updated on November 2, 2026 and i.Sudoku on October 25, 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.*