# Rudoku vs C4K

The clearest difference is price: Rudoku at Free against C4K's $2.99. Rudoku also leads on rating (4.7 vs 4.0) and ratings volume (19 vs 1). C4K's advantage is review sentiment (100% vs 85%) and iOS requirement (11.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Rudoku is free to download; C4K costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rudoku holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Rudoku has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 85% of Rudoku's written reviews are positive against 100% of C4K's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | Rudoku | C4K |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.7 (19 ratings)](https://appshunter.io/ios/app/rudoku/id965105321/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/c4k-coding-for-kids/id6450687432/reviews) |
| Number of ratings | **19** | 1 |
| Positive reviews | 84.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | **Free** | Paid |
| Size | 15 MB | 995 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Cerebral Gardens](https://appshunter.io/developer/287980272) | [Dai Phan](https://appshunter.io/developer/1462563314) |

## What reviewers say

### Rudoku

[App page](https://appshunter.io/ios/app/rudoku/id965105321)

This is a challenging number and logic puzzle game with multiple modes and difficulty levels. Track your progress with detailed stats and earn achievements. Enjoy endless playability with unique puzzles and accessibility features like dark mode.

**Highlights:** Multiple game modes, Adjustable difficulty levels, Variable board sizes, Detailed gameplay stats, Multiple achievements, Dark and light color modes, No in-app purchases

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

**In-app purchases:** none


### C4K

[App page](https://appshunter.io/ios/app/c4k-coding-for-kids/id6450687432)

This app teaches children aged 6-12 fundamental programming concepts through engaging games and hands-on exercises. It features nearly 2,000 levels across 22 games, covering drag-and-drop mechanics, debugging, loops, functions, and coordinates in a gender-neutral, intuitive interface.

**Highlights:** Drag-and-drop coding blocks, Debugging and sequence logic, Loop and function concepts, Coordinate-based puzzles, Hundreds of challenges, Offline play

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rudoku free?

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

### Is C4K free?

C4K costs $2.99, with no in-app purchases.

### Which has better reviews, Rudoku or C4K?

Rudoku is rated higher. Rudoku averages 4.7 out of 5 from 19 ratings, while C4K averages 4.0 from 1 ratings.

### Do Rudoku or C4K have ads?

Neither Rudoku nor C4K shows ads.

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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.*