# 共円 vs Sudoku Rush

The clearest difference is ads: 共円 at none against Sudoku Rush's shown. Sudoku Rush's advantage is update cadence (every 2 days vs every 5 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

共円 ships an update every 5 days, Sudoku Rush every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 共円 | Sudoku Rush |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 74 MB | 70 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Kei Masaoka](https://appshunter.io/developer/1817159600) | [DOWOO KIM](https://appshunter.io/developer/1867688530) |

## What reviewers say

### 共円

[App page](https://appshunter.io/ios/app/id6748556458)

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

**In-app purchases:** none


### Sudoku Rush

[App page](https://appshunter.io/ios/app/sudoku-rush-evolution-battle/id6758992081)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 共円 free?

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

### Is Sudoku Rush free?

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

### Do 共円 or Sudoku Rush have ads?

Sudoku Rush shows ads; 共円 does not.

### Which is updated more often, 共円 or Sudoku Rush?

共円 ships an update every 5 days, and Sudoku Rush every 2 days. Most recently, 共円 was updated on October 30, 2026 and Sudoku Rush 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.*