# ProbabilityPlayer vs Mathstep

The clearest difference is in-app purchases: Mathstep at none against ProbabilityPlayer's 1. Mathstep also leads on update cadence (every 3 days vs monthly) and iOS requirement (12.0 vs 18.0). ProbabilityPlayer's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. ProbabilityPlayer sells 1 one-off in-app purchase. Mathstep asks for nothing beyond the download.

ProbabilityPlayer ships an update monthly, Mathstep every 3 days. The most recent releases landed on October 13, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ProbabilityPlayer | Mathstep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 32 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motonari Hibi](https://appshunter.io/developer/386737172) | [Takao Ambe](https://appshunter.io/developer/1819409213) |

## 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 |


### Mathstep

[App page](https://appshunter.io/ios/app/mathstep/id6753911229)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ProbabilityPlayer free?

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

### Is Mathstep free?

Mathstep is free to download, with no in-app purchases.

### Do ProbabilityPlayer or Mathstep have ads?

Mathstep shows ads; ProbabilityPlayer does not.

### Which is updated more often, ProbabilityPlayer or Mathstep?

ProbabilityPlayer ships an update monthly, and Mathstep every 3 days. Most recently, ProbabilityPlayer was updated on October 13, 2026 and Mathstep on October 30, 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.*