Comparison

π(円周率)記憶ゲーム vs Samurai Attacks

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head

Rescue the People!

About

π(円周率)記憶ゲーム

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「π(円周率)記憶ゲーム」は、発達障がい（自閉症、アスペルガー症候群、注意欠如・多動性障がい（ADHD）、学習障がい、チック障がい）のある児童向け療育・知育ゲームアプリです。障がいのある子ども向けのシンプルなゲームアプリとなっています。 ◆ ルールは超簡単 ◆ 円周率(3.1415…と永久に続く小数点以下の数字(無理数）を覚える記憶ゲーム！円周率をたくさん覚えて円周率マスターになろう！ * オフラインでも遊ぶことができるので旅行中でもWi-Fiがなくても遊べます。 * 本ゲームは無料ですが広告が表示されます。 * 遊び時間にご注意ください。

About

Samurai Attacks

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You are a samurai of the town. One day, a lot of monsters appear in the town of castle. You and your friends attack to them with brave. You have to beat monsters using weapon who monsters coming from the front towards you and your friends. * Running and throwing weapons are automatically.

Screenshots

π(円周率)記憶ゲーム3 screens

Samurai Attacks4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard1 real difference · 5 level

π(円周率)記憶ゲーム versus Samurai Attacks: the parameters behind the verdict, then further details
Parameter	π(円周率)記憶ゲーム	Samurai Attacks
Price	Free	Free
Update frequency	Every 3 months	Every 9 days — better
Ads	Yes	Yes
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	11.0 — better	12.0
Further details — not scored
Size	62 MB	80 MB
Age rating	4+	4+
Developer	Garhi Japan K.K.	Koichi Iwasaki

In-app purchases

None

π(円周率)記憶ゲーム

No in-app purchases

None

Samurai Attacks

No in-app purchases

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.