# ターンナップ vs ProbabilityPlayer

The clearest difference is in-app purchases: ターンナップ at none against ProbabilityPlayer's 1. ProbabilityPlayer's advantage is update cadence (monthly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ProbabilityPlayer sells 1 one-off in-app purchase. ターンナップ asks for nothing beyond the download.

ターンナップ ships an update every 4 months, ProbabilityPlayer monthly. The most recent releases landed on August 2, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | ターンナップ | ProbabilityPlayer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 9 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 9+ | 4+ |
| Developer | [株式会社ターンナップ](https://appshunter.io/developer/1261807486) | [Motonari Hibi](https://appshunter.io/developer/386737172) |

## What reviewers say

### ターンナップ

[App page](https://appshunter.io/ios/app/id1643555263)

**Features:** 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 ターンナップ free?

ターンナップ is free to download, with no in-app purchases.

### Is ProbabilityPlayer free?

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

### Do ターンナップ or ProbabilityPlayer have ads?

Neither ターンナップ nor ProbabilityPlayer shows ads.

### Which is updated more often, ターンナップ or ProbabilityPlayer?

ターンナップ ships an update every 4 months, and ProbabilityPlayer monthly. Most recently, ターンナップ was updated on August 2, 2026 and ProbabilityPlayer on August 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.*