# Catdoku vs Sudoku Scan and Solve

The clearest difference is price: Sudoku Scan and Solve at Free against Catdoku's $1.99. Catdoku's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Sudoku Scan and Solve is free to download; Catdoku costs $1.99 up front. Sudoku Scan and Solve sells 2 in-app purchases, starting at $0.99 per month. Catdoku asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 12, 2026.

## The numbers

| Metric | Catdoku | Sudoku Scan and Solve |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Paid | — |
| Best chart rank | **#199** | — |
| Size | 55 MB | 89 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergio Marin](https://appshunter.io/developer/1731012600) | [Olive & Co](https://appshunter.io/developer/1541044815) |

## What reviewers say

### Catdoku

[App page](https://appshunter.io/ios/app/catdoku/id6477891720)

**Currently charting:** #199 Top Paid · Casual (US App Store)

This puzzle game reimagines Sudoku by replacing numbers with cute cats. It offers various grid sizes and daily challenges to keep players engaged. Enjoy a relaxing yet mentally stimulating experience with a feline twist.

**Highlights:** Cat-themed Sudoku gameplay, Multiple grid sizes (4x4, 6x6, 9x9), Daily puzzle challenges, Suitable for beginners and pros, Relaxing and mentally stimulating

**Features:** macOS Compatibility

**In-app purchases:** none


### Sudoku Scan and Solve

[App page](https://appshunter.io/ios/app/sudoku-scan-and-solve/id6762009474)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |
| Premium | $7.99 | per year |


## Frequently asked questions

### Is Catdoku free?

Catdoku costs $1.99, with no in-app purchases.

### Is Sudoku Scan and Solve free?

Sudoku Scan and Solve is free to download, with in-app purchases available.

### Do Catdoku or Sudoku Scan and Solve have ads?

Sudoku Scan and Solve shows ads; Catdoku does not.

### Which is updated more often, Catdoku or Sudoku Scan and Solve?

Catdoku ships an update every 3 weeks, and Sudoku Scan and Solve every 3 weeks. Most recently, Catdoku was updated on October 12, 2026 and Sudoku Scan and Solve on October 12, 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.*