BUNKAI vs 素因数分解キングダム
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
BUNKAI
A brain-training puzzle game where players break down numbers until they reach one. It uses prime factorization to defeat monsters, making learning math fun and engaging. Enjoy a simple yet addictive experience that boosts your calculation skills.
- Number decomposition puzzles
- Prime factorization mechanics
- Monster-battling gameplay
- Calculation skill training
- Simple tap controls
- Addictive brain training
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１になるまで数字を分解しよう！ ゲームしながら楽しく計算力が鍛えられる！ 「BUNKAI」はシンプルでハマり度120%の脳トレゲームです。 操作方法はタップするだけ。 遊べば遊ぶほど脳が活性化されます。 素因数分解を駆使してモンスターをぶっ飛ばせ！
素因数分解キングダム
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素因数分解キングダムはゲームを通じて、素因数分解を学ぶことができるアプリです。 単にゲームとして楽しむだけでなく、定期テスト対策や受験勉強の一環としても活用できます。 また、脳トレとしても効果的なので、学生以外にもおすすめです。 "Prime Factorization Kingdom" is an app that allows users to learn prime factorization through gameplay. Not only can it be enjoyed as a game, but it can also be utilized as part of regular test preparation or entrance exam studies. Additionally, it is effective as a brain-training tool, making it highly recommended not just for students but for people of all ages.
Screenshots
Verdict
The clearest difference is ads: 素因数分解キングダム at none against BUNKAI's shown. 素因数分解キングダム also leads on update cadence (weekly vs every 2 months). BUNKAI's advantage is iOS requirement (11.0 vs 16.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BUNKAI ships an update every 2 months, 素因数分解キングダム weekly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | BUNKAI | 素因数分解キングダム |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 12.5% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 114 MB | 55 MB |
| Age rating | 17+ | 4+ |
| Developer | ZERONE | Yuta Matsuda |
In-app purchases
BUNKAI
No in-app purchases
素因数分解キングダム
No in-app purchases
