# Chessdoku vs Sleepy Cats

The clearest difference is in-app purchases: Sleepy Cats at none against Chessdoku's 1. Sleepy Cats also leads on update cadence (every 2 days vs every 5 weeks). Chessdoku's advantage is ads (none vs shown). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Chessdoku sells 1 one-off in-app purchase. Sleepy Cats asks for nothing beyond the download.

Chessdoku ships an update every 5 weeks, Sleepy Cats every 2 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Chessdoku | Sleepy Cats |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chessdoku/id6789803491/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 32 MB | 252 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Matt Falk](https://appshunter.io/developer/6789803493) | [Takeru Ito](https://appshunter.io/developer/1153247304) |

## What reviewers say

### Chessdoku

[App page](https://appshunter.io/ios/app/chessdoku/id6789803491)

This logic puzzle game combines Sudoku-style placement with chess piece attack rules. Solve over 1,500 unique puzzles across five distinct game modes, with a daily challenge for all players. Enjoy a pure, offline experience with no ads or tracking.

**Highlights:** Sudoku-style piece placement, Chess piece attack logic, Five unique game modes, 1,500 puzzles, Daily challenge, Offline play, Hint system with deductions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $4.99 | one-time |


### Sleepy Cats

[App page](https://appshunter.io/ios/app/sleepy-cats/id6810125359)

A logic puzzle game where you tap cats to send them to sleep in the correct order. Discover unique cat behaviors and challenging puzzle mechanics across thousands of levels. Collect adorable cats and furniture for your cozy Dream Loft.

**Highlights:** Tap to match numbers and send cats to sleep, Unique cat behaviors and puzzle mechanics, Thousands of logic puzzles, Collect cats and furniture, Unlockable Dream Loft, Available in 9 languages

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

**In-app purchases:** none


## Frequently asked questions

### Is Chessdoku free?

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

### Is Sleepy Cats free?

Sleepy Cats is free to download, with no in-app purchases.

### Do Chessdoku or Sleepy Cats have ads?

Sleepy Cats shows ads; Chessdoku does not.

### Which is updated more often, Chessdoku or Sleepy Cats?

Chessdoku ships an update every 5 weeks, and Sleepy Cats every 2 days. Most recently, Chessdoku was updated on October 31, 2026 and Sleepy Cats on November 6, 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.*