# StroopEffect2 vs ことばのたね

The clearest difference is price: ことばのたね at Free against StroopEffect2's $2.99. StroopEffect2's advantage is iOS requirement (15.6 vs 18.1). On ads, in-app purchases and device support there is nothing between them.

ことばのたね is free to download; StroopEffect2 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | StroopEffect2 | ことばのたね |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | — |
| Monetization | Paid | — |
| Size | 2 MB | 92 MB |
| Requires iOS | **15.6** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Yuichiro Yoshioka](https://appshunter.io/developer/1831149460) |

## What reviewers say

### 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


### ことばのたね

[App page](https://appshunter.io/ios/app/id6749556451)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StroopEffect2 free?

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

### Is ことばのたね free?

ことばのたね is free to download, with no in-app purchases.

### Do StroopEffect2 or ことばのたね have ads?

Neither StroopEffect2 nor ことばのたね shows ads.

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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.*