# Paper, Pen, Sudoku! vs Killer Sudoku

The clearest difference is ads: Killer Sudoku at none against Paper, Pen, Sudoku!'s shown. Paper, Pen, Sudoku!'s advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, 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.

Paper, Pen, Sudoku! ships an update monthly, Killer Sudoku fortnightly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Paper, Pen, Sudoku! | Killer Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mert Gurcan](https://appshunter.io/developer/1455793500) | [Dmitrii Kurbakov](https://appshunter.io/developer/6796452758) |

## What reviewers say

### Paper, Pen, Sudoku!

[App page](https://appshunter.io/ios/app/paper-pen-sudoku/id1614014342)

Experience the classic pencil-and-paper Sudoku on your iPhone. Enjoy a clean, distraction-free interface with a built-in timer to track your progress. Features a minimalist design and new puzzles generated every time.

**Highlights:** Minimalist paper-and-pen design, Built-in solving timer, Light and dark mode, New puzzle generation, Distraction-free gameplay

**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 Paper, Pen, Sudoku! free?

Paper, Pen, Sudoku! 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 Paper, Pen, Sudoku! or Killer Sudoku have ads?

Paper, Pen, Sudoku! shows ads; Killer Sudoku does not.

### Which is updated more often, Paper, Pen, Sudoku! or Killer Sudoku?

Paper, Pen, Sudoku! ships an update monthly, and Killer Sudoku fortnightly. Most recently, Paper, Pen, Sudoku! was updated on October 30, 2026 and Killer Sudoku on October 29, 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.*