# ProbabilityPlayer vs 高校数学 数I〜数C 解法の最初の一手

The clearest difference is update cadence: 高校数学 数I〜数C 解法の最初の一手 at every 8 days against ProbabilityPlayer's monthly. 高校数学 数I〜数C 解法の最初の一手 also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ProbabilityPlayer sells 1 one-off in-app purchase and 高校数学 数I〜数C 解法の最初の一手 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ProbabilityPlayer ships an update monthly, 高校数学 数I〜数C 解法の最初の一手 every 8 days. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | ProbabilityPlayer | 高校数学 数I〜数C 解法の最初の一手 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 22 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motonari Hibi](https://appshunter.io/developer/386737172) | [Gen Nakanishi](https://appshunter.io/developer/6782112814) |

## What reviewers say

### ProbabilityPlayer

[App page](https://appshunter.io/ios/app/probabilityplayer/id6737689746)

Practice probability problems for the Kyotsu Test, a common Japanese university entrance exam. This app focuses on mathematical probability questions and includes diagrams to aid understanding. It is designed to help students prepare for this specific academic assessment.

**Highlights:** Probability problem practice, Kyotsu Test focus, Mathematical probability, Diagrams included, University entrance exam prep

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### 高校数学 数I〜数C 解法の最初の一手

[App page](https://appshunter.io/ios/app/ic/id6782112812)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全解放（すべての初手） | $4.99 | one-time |


## Frequently asked questions

### Is ProbabilityPlayer free?

ProbabilityPlayer is free to download, with in-app purchases available.

### Is 高校数学 数I〜数C 解法の最初の一手 free?

高校数学 数I〜数C 解法の最初の一手 is free to download, with in-app purchases available.

### Do ProbabilityPlayer or 高校数学 数I〜数C 解法の最初の一手 have ads?

Neither ProbabilityPlayer nor 高校数学 数I〜数C 解法の最初の一手 shows ads.

### Which is updated more often, ProbabilityPlayer or 高校数学 数I〜数C 解法の最初の一手?

ProbabilityPlayer ships an update monthly, and 高校数学 数I〜数C 解法の最初の一手 every 8 days. Most recently, ProbabilityPlayer was updated on September 27, 2026 and 高校数学 数I〜数C 解法の最初の一手 on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*