# 筆算の学習（わり算・かけ算） vs StroopEffect2

The clearest difference is price: 筆算の学習（わり算・かけ算） at $0.99 against StroopEffect2's $2.99. 筆算の学習（わり算・かけ算） also leads on iOS requirement (12.0 vs 15.6). StroopEffect2's advantage is device support (3 vs 1). On update cadence, ads and in-app purchases there is nothing between them.

筆算の学習（わり算・かけ算） costs $0.99 and StroopEffect2 $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

筆算の学習（わり算・かけ算） ships an update every 9 months, StroopEffect2 every 14 months. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 筆算の学習（わり算・かけ算） | StroopEffect2 |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 14 months |
| Monetization | — | Paid |
| Size | 4 MB | 2 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [masafumi sasaki](https://appshunter.io/developer/1016775706) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### 筆算の学習（わり算・かけ算）

[App page](https://appshunter.io/ios/app/id1049200102)

**Features:** macOS Compatibility

**In-app purchases:** none


### StroopEffect2

[App page](https://appshunter.io/ios/app/stroopeffect2/id1050388935)

This app demonstrates the psychological phenomenon known as the Stroop effect. It presents a time-trial game where users must identify the color of words, even when the word itself names a different color. It's a fun way to explore cognitive processing and reaction times.

**Highlights:** Stroop effect demonstration, Time trial game mode, Cognitive processing experiment, Reaction time measurement, Educational psychology tool

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

**In-app purchases:** none


## Frequently asked questions

### Is 筆算の学習（わり算・かけ算） free?

筆算の学習（わり算・かけ算） costs $0.99, with no in-app purchases.

### Is StroopEffect2 free?

StroopEffect2 costs $2.99, with no in-app purchases.

### Do 筆算の学習（わり算・かけ算） or StroopEffect2 have ads?

Neither 筆算の学習（わり算・かけ算） nor StroopEffect2 shows ads.

### Which is updated more often, 筆算の学習（わり算・かけ算） or StroopEffect2?

筆算の学習（わり算・かけ算） ships an update every 9 months, and StroopEffect2 every 14 months. Most recently, 筆算の学習（わり算・かけ算） was updated on September 14, 2026 and StroopEffect2 on September 18, 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.*