# Proper Sudoku vs Arrow Shift

The clearest difference is in-app purchases: Arrow Shift at none against Proper Sudoku's 1. Arrow Shift also leads on update cadence (every 3 days vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Proper Sudoku sells 1 one-off in-app purchase. Arrow Shift asks for nothing beyond the download.

Proper Sudoku ships an update every 10 months, Arrow Shift every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Proper Sudoku | Arrow Shift |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 3 days** |
| Size | 431 MB | 58 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gameware Europe Ltd](https://appshunter.io/developer/1794895323) | [Keyur Rakholiya](https://appshunter.io/developer/1891392407) |

## What reviewers say

### Proper Sudoku

[App page](https://appshunter.io/ios/app/proper-sudoku/id6741939830)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $4.99 | one-time |


### Arrow Shift

[App page](https://appshunter.io/ios/app/arrow-shift-puzzle-game/id6799725520)

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

**In-app purchases:** none


## Frequently asked questions

### Is Proper Sudoku free?

Proper Sudoku is free to download, with in-app purchases available.

### Is Arrow Shift free?

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

### Do Proper Sudoku or Arrow Shift have ads?

Both Proper Sudoku and Arrow Shift show ads.

### Which is updated more often, Proper Sudoku or Arrow Shift?

Proper Sudoku ships an update every 10 months, and Arrow Shift every 3 days. Most recently, Proper Sudoku was updated on October 30, 2026 and Arrow Shift on October 31, 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.*