# Sudoku Express vs cardinal.

The clearest difference is review sentiment: cardinal. at 75% against Sudoku Express's 23%. cardinal. also leads on price (Free vs $3.99) and rating (5.0 vs 4.5). Sudoku Express's advantage is ratings volume (84 vs 12). On ads, in-app purchases and device support there is nothing between them.

cardinal. is free to download; Sudoku Express costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

cardinal. holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Sudoku Express has 84 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 23% of Sudoku Express's written reviews are positive against 75% of cardinal.'s.

Sudoku Express ships an update every 6 weeks, cardinal. every 3 days. The most recent releases landed on September 20, 2026 and July 21, 2026 respectively.

## The numbers

| Metric | Sudoku Express | cardinal. |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.5 (84 ratings)](https://appshunter.io/ios/app/sudoku-express/id996932318/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/cardinal/id1589334930/reviews)** |
| Number of ratings | **84** | 12 |
| Positive reviews | 23.1% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Paid | **Free** |
| Size | 6 MB | 99 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pheinex, LLC](https://appshunter.io/developer/996932317) | [Perfect Hat Games LLC](https://appshunter.io/developer/1124547329) |

## What reviewers say

### Sudoku Express

[App page](https://appshunter.io/ios/app/sudoku-express/id996932318)

Enjoy a classic Sudoku experience with a clean, minimalist interface designed for focused puzzle-solving. Customize your game with multiple color and font options. Offers over 1,000 unique puzzles across easy, medium, and hard difficulties for extended gameplay.

**Highlights:** Minimalist flat UI design, Easy noting system, Multiple color schemes, Font selection for customization, 1,001 unique puzzles per difficulty, Easy, Medium, and Hard difficulty levels

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

**In-app purchases:** none


### cardinal.

[App page](https://appshunter.io/ios/app/cardinal/id1589334930)

Engage in a minimalistic logic puzzle game where you deduce a secret solution using sixteen cards and clues. Enjoy procedurally generated boards for endless play and compete globally in daily challenges.

**Highlights:** Minimalistic logic puzzles, Deduce secret solutions, Procedurally generated boards, Endless regular mode, Daily global competitions, 16 logic cards

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku Express free?

Sudoku Express costs $3.99, with no in-app purchases.

### Is cardinal. free?

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

### Which has better reviews, Sudoku Express or cardinal.?

cardinal. is rated higher. Sudoku Express averages 4.5 out of 5 from 84 ratings, while cardinal. averages 5.0 from 12 ratings.

### Do Sudoku Express or cardinal. have ads?

Neither Sudoku Express nor cardinal. shows ads.

### Which is updated more often, Sudoku Express or cardinal.?

Sudoku Express ships an update every 6 weeks, and cardinal. every 3 days. Most recently, Sudoku Express was updated on September 20, 2026 and cardinal. on July 21, 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.*