# Mahjong vs Killer Sudoku

The clearest difference is ads: Killer Sudoku at none against Mahjong's shown. Mahjong's advantage is update cadence (every 4 days vs fortnightly) and iOS requirement (15.0 vs 17.0). On price, 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.

Mahjong ships an update every 4 days, Killer Sudoku fortnightly. The most recent releases landed on October 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Mahjong | Killer Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 105 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KyoungHoon Cha](https://appshunter.io/developer/1828853316) | [Dmitrii Kurbakov](https://appshunter.io/developer/6796452758) |

## What reviewers say

### Mahjong

[App page](https://appshunter.io/ios/app/mahjong-k/id6754126278)

**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 Mahjong free?

Mahjong 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 Mahjong or Killer Sudoku have ads?

Mahjong shows ads; Killer Sudoku does not.

### Which is updated more often, Mahjong or Killer Sudoku?

Mahjong ships an update every 4 days, and Killer Sudoku fortnightly. Most recently, Mahjong was updated on October 25, 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.*