# PrimeNumbersGirl — Prime Numbers...love it?

> A narrative game about prime numbers with simple judgment gameplay. (iPhone/iPad app by radiuthree Co., Ltd.)

- Source: https://appshunter.io/ios/app/primenumbersgirl/id1329465291 (this page in markdown: same URL + `.md`)
- Developer: [radiuthree Co., Ltd](https://appshunter.io/developer/1158448737)
- Category: Games, Education, Puzzle, Trivia
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 12.0 · 163 MB
- Languages: American English, Japanese
- Released: 2018-01-25
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/primenumbersgirl/id1329465291/reviews.md

## What is PrimeNumbersGirl?

◇◇◇ Story ◇◇◇
"You, you like prime numbers?"
A story began from a place where such a voice was spoken from a mysterious beauty girl after school for a day.
Yes, This is a story of love and adventure about prime numbers.
I will definitely remember the joy of meeting new prime numbers.

◇◇◇ Feature ◇◇◇
Whole prime numbers industry shock!?
Let's enjoy finding prime numbers with Motoco-san who likes prime numbers.
Easy game just to judge whether the numerical question to be given from girls is prime numbers or not.
Something good happens when it becomes possible to judge a lot of prime numbers!?
Does it make you misunderstood with harsh words if you answer wrong?

## Key features

- Prime number identification gameplay
- Interactive story with a mysterious girl
- Judgment-based challenges
- Unlockable events based on performance
- Playful consequences for wrong answers

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Hide ads | $0.99 | one-time |
| 金の素数ガチャ | $0.99 | one-time |


## Recent user reviews (10 of 13)

All indexed reviews: https://appshunter.io/ios/app/primenumbersgirl/id1329465291/reviews.md

### 5/5 — 任意

*2025-10-08, version 2.7.0*

∀

### 5/5 — 広告読み込まないです

*2024-12-19, version 2.7.0*

広告読み込みの画面から進まないことが頻繁にあります。ゲームとしては面白いです。

### 5/5 — やればはまる

*2024-12-17, version 2.7.0*

めっちゃ楽しい

### 5/5 — 全米が泣いた

*2020-10-23, version 1.0.6*

全米が泣いた

### 5/5 — 神

*2020-04-26, version 1.0.6*

素数好きのツンデレ女と素数を探す物語
可愛いし楽しいし最高
広告が見たい人だけがみるものであむたりするのも神ポイント
製作者さんありがとう

### 5/5 — なんで俺は素数で興奮しているんだ‥？

*2020-02-22, version 1.0.6*

初め　「素数てww」
1時間後 「あっそれもそすうなのね…」
3時間後 「ふーん、えっちじゃん」
今では17に興奮するぞどうしてくれる

### 5/5 — 57は

*2019-08-18, version 1.0.6*

合成数(3×19)だろ！
ってとこ以外はいいw
ま、わざとかも知んないけどねw

### 5/5 — 素数最高！

*2019-02-13, version 1.0.6*

難すぎ！僕は1分間で2から順番に素数を言っていく選手権で241までいけることを誇りに思ってたけどこのゲームで自分はまだまだだと思い知りました。文句を言うならば、5秒で78563を素因数分解できるわけないやろ！ちやみに答えは313かける251です笑

### 5/5 — 最高

*2018-05-19, version 1.0.6*

勉強になる(確信)

### 5/5 — 良い点と要望

*2018-05-10, version 1.0.6*

良い点
・難易度が高いから難しく、続けられる
・一風変わったギャルゲーのような感じがまた良い
・友人と盛り上がる
・素数を覚えられる
・素数に関する様々なことを学べる
要望
・キャラ数の増加(3人ぐらい,難易度別にキャラがあると良い 銀の数字や金の数字のコレクト数でキャラ解放もあり)
・更なる素数に関する情報(ex.レピュニット型素数)
・キャラのセリフの追加
・ストーリーの追加
・遭遇した合成数の項目の追加(素因数分解も含めて)
・広告の勧め表示率の増加
・称号(銀の数字や金の数字の数によるもの)

このゲームをこよなく愛する上での個人的な意見です。参考までに。

## Frequently asked questions about PrimeNumbersGirl

### What is PrimeNumbersGirl?

PrimeNumbersGirl is a narrative game where players identify prime numbers to progress through a love story. The core gameplay involves judging if presented numbers are prime.

### How do I play PrimeNumbersGirl?

Gameplay is straightforward: you'll be presented with numerical questions and must quickly decide if the number is prime. Successfully identifying many prime numbers leads to positive story developments.

### Does PrimeNumbersGirl have ads?

Yes, PrimeNumbersGirl contains advertisements. This helps support the game's development and allows it to remain free to play.

### What devices can I play PrimeNumbersGirl on?

PrimeNumbersGirl is available on iPhone, iPad, and iPod devices. It is designed for iOS users.

### Is PrimeNumbersGirl suitable for children?

PrimeNumbersGirl has an age rating of 4+, making it suitable for younger players. The game's content is designed to be lighthearted and educational.

### When was PrimeNumbersGirl last updated?

The latest version of PrimeNumbersGirl is 2.11.1, last updated on January 6, 2026. This indicates ongoing support and potential for new content.

### Can I purchase items in PrimeNumbersGirl?

Yes, PrimeNumbersGirl offers in-app purchases. These may enhance the gameplay experience or provide additional content for players who wish to support the game further.

### What happens if I answer incorrectly in PrimeNumbersGirl?

Answering incorrectly in PrimeNumbersGirl may result in playful reprimands from the characters. The game uses this as a narrative element to add personality and challenge.

## Version history (last 5 releases)

### 2.11.1 — 2026-01-06

Some Buf Fix.

### 2.8.0 — 2025-10-28

Some Bug Fix.

### 2.7.0 — 2023-08-22

Some Bug Fix.

### 2.4.3 — 2022-06-01

Some bug fix.

### 2.4.2 — 2022-04-27

Some bug fix.

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## More apps by radiuthree Co., Ltd

- [FILLIT the Abstract Strategy](https://appshunter.io/ios/app/fillit-the-abstract-strategy/id1448147446)
- [RotaStone](https://appshunter.io/ios/app/rotastone/id1619250280)
- [Turn on the light - puzzle](https://appshunter.io/ios/app/turn-on-the-light-puzzle/id1623164594)

All apps by radiuthree Co., Ltd: https://appshunter.io/developer/1158448737

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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 2026-06-01.*