# Master Sudoku Challenge vs Killer Sudoku

The clearest difference is update cadence: Master Sudoku Challenge at weekly against Killer Sudoku's fortnightly. Master Sudoku Challenge also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Master Sudoku Challenge ships an update weekly, Killer Sudoku fortnightly. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Master Sudoku Challenge | Killer Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 52 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YGALAAD](https://appshunter.io/developer/1713922439) | [Dmitrii Kurbakov](https://appshunter.io/developer/6796452758) |

## What reviewers say

### Master Sudoku Challenge

[App page](https://appshunter.io/ios/app/master-sudoku-challenge/id6670557985)

**Features:** macOS Compatibility

**In-app purchases:** none


### Killer Sudoku

[App page](https://appshunter.io/ios/app/killer-sudoku-quick-notes/id6797194087)

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

**In-app purchases:** none


## Frequently asked questions

### Is Master Sudoku Challenge free?

Master Sudoku Challenge is free to download, with no in-app purchases.

### Is Killer Sudoku free?

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

### Do Master Sudoku Challenge or Killer Sudoku have ads?

Neither Master Sudoku Challenge nor Killer Sudoku shows ads.

### Which is updated more often, Master Sudoku Challenge or Killer Sudoku?

Master Sudoku Challenge ships an update weekly, and Killer Sudoku fortnightly. Most recently, Master Sudoku Challenge was updated on October 16, 2026 and Killer Sudoku on October 4, 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.*