# ProbabilityPlayer — Kyotsu Test Math Run & Diagram

> Educational app for practicing Japanese university entrance exam probability math. (iPhone/iPad app by Motonari Hibi.)

- Source: https://appshunter.io/ios/app/probabilityplayer/id6737689746 (this page in markdown: same URL + `.md`)
- Developer: [Motonari Hibi](https://appshunter.io/developer/386737172)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 9 MB
- Languages: American English, Japanese
- Released: 2024-11-03
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/probabilityplayer/id6737689746/reviews.md

## What is ProbabilityPlayer?

This is an app for Kyotsu Test, the test widely used in Japanese university entrance exams, dealing especially with probability problems in mathematics.

I have applied to the rights holder to use the test.

## Key features

- Probability problem practice
- Kyotsu Test focus
- Mathematical probability
- Diagrams included
- University entrance exam prep

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium | $1.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/probabilityplayer/id6737689746/reviews.md

### 5/5 — 楽しいです

*2025-04-20*

文の表示が直りました。ありがとうございます。

**Developer response:** その部分を指で横になぞると残りが表示されるはずです。
ありがとうございます。

(追記)
修正して
スペースに余裕があるときは全部表示。
余裕がない時は横になぞって表示させる。
としました。

## Frequently asked questions about ProbabilityPlayer

### What is ProbabilityPlayer used for?

ProbabilityPlayer is an educational app designed to help students practice probability problems specifically for the Kyotsu Test, a widely used Japanese university entrance examination. It focuses on mathematical probability and includes diagrams for better comprehension.

### Is ProbabilityPlayer free to use?

Yes, ProbabilityPlayer is free to download and use. However, it does offer in-app purchases for additional features or content, as indicated by its monetization model.

### What devices does ProbabilityPlayer support?

ProbabilityPlayer is available on both iPhone and iPad devices, making it accessible to a wide range of iOS users preparing for their exams.

### How often is ProbabilityPlayer updated?

The app was last updated on March 10, 2026, indicating a recent update. The developer, Motonari Hibi, has released version 1.3.7, suggesting ongoing maintenance and potential improvements.

### What is the age rating for ProbabilityPlayer?

ProbabilityPlayer has an age rating of 4+, making it suitable for a broad audience. This rating suggests the content is appropriate for younger learners as well as older students.

### Does ProbabilityPlayer have ads?

No, ProbabilityPlayer does not contain advertisements. This ensures an uninterrupted learning experience for users focused on exam preparation.

### Can ProbabilityPlayer help with other math topics besides probability?

ProbabilityPlayer's primary focus is on mathematical probability problems relevant to the Kyotsu Test. While it may indirectly reinforce general math skills, its core content is specialized for probability.

### Where can I find information about the rights holder for the Kyotsu Test?

The developer has applied to the rights holder for permission to use the Kyotsu Test material. Specific details about the rights holder are not provided within the app's description.

## Version history (last 5 releases)

### 1.3.7 — 2026-03-10

Supports iPad's compact window.

### 1.3.6 — 2026-01-15

Build in a new environment

### 1.3.5 — 2025-07-14

Minor corrections have been made.

### 1.3.4 — 2025-05-10

Bug Fixes
Reduced application size
Added a function to monitor network status

### 1.3.3 — 2025-04-20

Fixed a display bug.
New app added.

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## More apps by Motonari Hibi

- [LadderTouch](https://appshunter.io/ios/app/laddertouch/id386737169)
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- [FindSpeedAnimation](https://appshunter.io/ios/app/findspeedanimation/id504162124)
- [SilentBonusTrack](https://appshunter.io/ios/app/silentbonustrack/id725815269)
- [SilentBonusTrackLite](https://appshunter.io/ios/app/silentbonustracklite/id796302146)
- [NumericTadpole](https://appshunter.io/ios/app/numerictadpole/id972559163)

All apps by Motonari Hibi: https://appshunter.io/developer/386737172

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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 2026-08-27.*