# KaruQ — Brainy Math Puzzle

> Math puzzle game where players defeat numbered ghosts using calculable flames. (iPhone/iPad app by Ryuji Kuwaki.)

- Source: https://appshunter.io/ios/app/karuq/id6742257994 (this page in markdown: same URL + `.md`)
- Developer: [Ryuji Kuwaki](https://appshunter.io/developer/372117022)
- Category: Games, Education, Puzzle
- Price: $1.99
- Rating: 4.90/5 from 63 App Store ratings · 22 written reviews indexed
- Age rating: +9
- Requires: iOS 14.0 · 82 MB
- Languages: American English
- Released: 2025-05-08
- Data updated: 2026-09-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/karuq/id6742257994/reviews.md

## What is KaruQ?

- Defeat the Ghosts with Calculations

Ghosts with numbers will appear on the screen.
You can defeat a ghost by hitting it with a flame that has the same number.

Flames can be merged and split.
Merging multiplies the numbers, and splitting divides them, allowing you to create various numbers.
You can also add 1 to a flame using a matchstick.
Use these actions to defeat the ghosts!

- This game includes:

Over 190 different puzzles

A challenging "Daily Puzzle" mode with one new problem each day

A "Puzzle Creation" mode
(Create your own puzzles and share them with other players.)

QR code scanning
(Scan puzzles made by others or generate puzzles automatically from QR codes.)

Four different graphic themes

## Key features

- Defeat ghosts with numerical flames
- Merge and split flames for calculations
- Over 190 unique puzzles
- Daily challenge mode
- Puzzle creation and sharing
- QR code puzzle scanning

## Recent user reviews (10 of 22)

All indexed reviews: https://appshunter.io/ios/app/karuq/id6742257994/reviews.md

### 4/5 — 頭の中で答えを出せない

*2026-07-10*

非常に挑戦しがいのある問題集ですが、私の場合は多くの場合、頭の中だけでは答えを出せません。
たまたま出来ることもあれば、表を作ってしらみつぶしに探すこともあります。携帯アプリとしての手頃感はないかも……。意地でもヒントなしで解こうとする反面、期限のあるデイリーにはヒントが欲しいと思ってしまいます。
このゲームをお勧めはします。でも本当に難しいです。

### 3/5 — どういうことだ

*2026-06-14*

2ページの5題目は絶対に解けないよね。ヒントも間違ってるよ。

### 5/5 — 手軽に

*2026-04-16*

遊べた

### 4/5 — 因数分解

*2026-04-13*

全てのステージで因数分解できる電卓を使えるようにしてください。電車に乗っているときにプレイすると、頭の中で計算するしかないです。

### 5/5 — 全クリしました！

*2026-02-13*

だんだん手応え感じられるようになってきて楽しくなってきます！
4ステージ目に行く頃には何を作れば突破できるかあらゆる択が頭に浮かび、するする解けるようになります
例えば、素因数分解して19が含まれていた場合は、18をつくってマッチを使うか119をつくるか19の倍数を作るように攻めるかなどが考えられます

### 5/5 — 詰みました

*2026-01-06*

2ページの5枚目で詰んでます。答えを見てもよく分かりません。2の累乗で28は作れません。

### 1/5 — page4の3の8枚目

*2025-12-09*

6のロウソクをタップしても数字が分解されなかったり、炎そのものが消えてしまったりするのですが…
ゲーム自体はとても楽しくてハマってます♪

### 5/5 — 良いデイリー待ってます

*2025-12-03*

2025/12/3 すごい良問のデイリー、解くのに数時間掛かったけど、解けると他では味わえない様な快感がある！

### 5/5 — 面白いただ…

*2025-11-21*

4ページ目の3の3つ目どうやってもできないです…
答え見て手順を一つずつ追ってみてもできず…

### 5/5 — シンプルなのに奥深く、長く遊べる

*2025-10-26*

ルールはとてもシンプルで、かけ算を習った小学生からできる。
ところが、いざやってみるとこれがなかなか難しい。
頭をやわらかくして、数字で遊ぶ感覚は、クセになる面白さ。
そして、解けたときの脳汁がドバッと出る感じ笑
煩わしい広告や、課金要素もなし。
パズル好きなかたにぜひ遊んでほしいアプリの筆頭です。

電車の乗り過ごしには気をつけて！

## Frequently asked questions about KaruQ

### What is the gameplay in KaruQ?

In KaruQ, you defeat ghosts by matching their numbers with flames. You can merge flames to multiply numbers, split them to divide, and add 1 with a matchstick to create the required calculations.

### How many puzzles are available in KaruQ?

KaruQ features over 190 different puzzles to challenge players. It also offers a "Daily Puzzle" mode with a new problem each day.

### Can I create my own puzzles in KaruQ?

Yes, KaruQ includes a "Puzzle Creation" mode that allows you to design your own puzzles and share them with other players. You can also scan puzzles made by others using QR codes.

### What is the price of KaruQ?

KaruQ is a paid application, priced at $1.99. This one-time purchase grants you access to all its features.

### Does KaruQ have ads?

No, KaruQ does not contain advertisements. As a paid application, it offers an uninterrupted gaming experience.

### What devices is KaruQ compatible with?

KaruQ is designed for iOS devices, including iPhone and iPad. It is available for iPod as well.

### How often is KaruQ updated?

The latest version of KaruQ is 1.0.2, last updated on October 9, 2025. Updates typically include new puzzles, features, or bug fixes.

### What is the age rating for KaruQ?

KaruQ has an age rating of 9+, making it suitable for children and adults who enjoy math and logic puzzles.

## Version history (last 3 releases)

### 1.0.2 — 2025-10-09

We corrected the four wrong answers in “99 Mysteries” on Page 2.
We also fixed the missing answer for Question 12 on Page 3.

### 1.0.1 — 2025-05-15

Fixed a bug that occurred when splitting flames.

### 1.0 — 2025-05-08

No release notes.

## Apps similar to KaruQ

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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## More apps by Ryuji Kuwaki

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- [ネコアップDX UFOで猫をつかまえろ！](https://appshunter.io/ios/app/dx-ufo/id929323693)
- [じいちゃんのワナin沖縄 〜 可愛い癒やし系放置ゲーム](https://appshunter.io/ios/app/in/id957963243)
- [SubaraCity](https://appshunter.io/ios/app/subaracity/id988621911)

All apps by Ryuji Kuwaki: https://appshunter.io/developer/372117022

## Related topics

[riemann](https://appshunter.io/ios/topics/riemann)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*