# π(円周率)記憶ゲーム vs Samurai Attacks

The clearest difference is update cadence: Samurai Attacks at every 9 days against π(円周率)記憶ゲーム's every 3 months. 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.

π(円周率)記憶ゲーム ships an update every 3 months, Samurai Attacks every 9 days. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | π(円周率)記憶ゲーム | Samurai Attacks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 62 MB | 80 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Garhi Japan K.K.](https://appshunter.io/developer/1444709284) | [Koichi Iwasaki](https://appshunter.io/developer/1308795626) |

## What reviewers say

### π(円周率)記憶ゲーム

[App page](https://appshunter.io/ios/app/id1636996175)

**In-app purchases:** none


### Samurai Attacks

[App page](https://appshunter.io/ios/app/samurai-attacks/id6547850496)

**In-app purchases:** none


## Frequently asked questions

### Is π(円周率)記憶ゲーム free?

π(円周率)記憶ゲーム is free to download, with no in-app purchases.

### Is Samurai Attacks free?

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

### Do π(円周率)記憶ゲーム or Samurai Attacks have ads?

Both π(円周率)記憶ゲーム and Samurai Attacks show ads.

### Which is updated more often, π(円周率)記憶ゲーム or Samurai Attacks?

π(円周率)記憶ゲーム ships an update every 3 months, and Samurai Attacks every 9 days. Most recently, π(円周率)記憶ゲーム was updated on October 3, 2026 and Samurai Attacks on October 19, 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.*