# Decoder vs Simple Sudoku Game

The clearest difference is rating: Simple Sudoku Game at 5.0 against Decoder's 1.2. Decoder's advantage is update cadence (every 7 months vs every 44 months) and ratings volume (5 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Simple Sudoku Game holds the better App Store score, 5.0 against 1.2. That said, the two scores are not equally well evidenced: Decoder has 5 ratings behind it against 1, so its average is the more settled of the two.

Decoder ships an update every 7 months, Simple Sudoku Game every 44 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Decoder | Simple Sudoku Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (5 ratings)](https://appshunter.io/ios/app/decoder/id294816947/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simple-sudoku-game/id337787822/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 44 months |
| Monetization | Free | Free |
| Size | 1 MB | 5 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Edwin Hou](https://appshunter.io/developer/292240393) | [Illés László](https://appshunter.io/developer/316890672) |

## What reviewers say

### Decoder

[App page](https://appshunter.io/ios/app/decoder/id294816947)

This app assists players in solving the Mastermind logic game. It helps narrow down possible solutions by analyzing your guesses and their scores. Continue inputting your game progress until only one solution remains.

**Highlights:** Mastermind game solver, Input guesses and scores, Reduces possible solutions, Guides to single solution

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Sudoku Game

[App page](https://appshunter.io/ios/app/simple-sudoku-game/id337787822)

Engage your mind with a vast collection of unique Sudoku puzzles. This game offers various difficulty levels, helpful tools like undo and notes, and tracks your progress with statistics and a timer.

**Highlights:** Over 1,000,000 unique puzzles, Undo functionality, Note-taking feature, Hint system, Erase tool, Multiple difficulty modes, Statistics tracking, In-game timer

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

**In-app purchases:** none


## Frequently asked questions

### Is Decoder free?

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

### Is Simple Sudoku Game free?

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

### Which has better reviews, Decoder or Simple Sudoku Game?

Simple Sudoku Game is rated higher. Decoder averages 1.2 out of 5 from 5 ratings, while Simple Sudoku Game averages 5.0 from 1 ratings.

### Do Decoder or Simple Sudoku Game have ads?

Neither Decoder nor Simple Sudoku Game shows ads.

### Which is updated more often, Decoder or Simple Sudoku Game?

Decoder ships an update every 7 months, and Simple Sudoku Game every 44 months. Most recently, Decoder was updated on October 3, 2026 and Simple Sudoku Game on October 7, 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.*