# 漸化式ガチャ vs ProbabilityPlayer

The clearest difference is price: ProbabilityPlayer at Free against 漸化式ガチャ's $6.99. ProbabilityPlayer also leads on ads (none vs shown). 漸化式ガチャ's advantage is in-app purchases (none vs 1). On review sentiment, update cadence, device support and iOS requirement there is nothing between them.

ProbabilityPlayer is free to download; 漸化式ガチャ costs $6.99 up front. ProbabilityPlayer sells 1 one-off in-app purchase. 漸化式ガチャ asks for nothing beyond the download.

漸化式ガチャ ships an update fortnightly, ProbabilityPlayer monthly. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 漸化式ガチャ | ProbabilityPlayer |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 9 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Akira Hiraoka](https://appshunter.io/developer/1668714727) | [Motonari Hibi](https://appshunter.io/developer/386737172) |

## What reviewers say

### 漸化式ガチャ

[App page](https://appshunter.io/ios/app/id6447540613)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 漸化式ガチャ free?

漸化式ガチャ costs $6.99, with no in-app purchases.

### Is ProbabilityPlayer free?

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

### Do 漸化式ガチャ or ProbabilityPlayer have ads?

漸化式ガチャ shows ads; ProbabilityPlayer does not.

### Which is updated more often, 漸化式ガチャ or ProbabilityPlayer?

漸化式ガチャ ships an update fortnightly, and ProbabilityPlayer monthly. Most recently, 漸化式ガチャ was updated on October 4, 2026 and ProbabilityPlayer on September 27, 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.*