# EYT Go/NoGo vs StroopEffect2

The clearest difference is price: StroopEffect2 at $2.99 against EYT Go/NoGo's $9.99. StroopEffect2 also leads on device support (3 vs 1). EYT Go/NoGo's advantage is update cadence (every 2 months vs every 14 months). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

EYT Go/NoGo costs $9.99 and StroopEffect2 $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EYT Go/NoGo ships an update every 2 months, StroopEffect2 every 14 months. The most recent releases landed on September 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | EYT Go/NoGo | StroopEffect2 |
| --- | --- | --- |
| Price | $9.99 | **$2.99** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/eyt-gonogo/id919065618/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | Paid | Paid |
| Size | 70 MB | 2 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [University of Wollongong](https://appshunter.io/developer/527113169) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### EYT Go/NoGo

[App page](https://appshunter.io/ios/app/eyt-gonogo/id919065618)

This iPad-based game assesses children's impulse control through a simple fish-catching and shark-avoiding mechanic. It takes about 5 minutes to complete and provides scores, with options to export detailed data for research. It's part of a larger toolbox of early childhood assessments.

**Highlights:** Inhibition assessment game, Tap fish, avoid sharks, 5-minute assessment, Score reporting, Data export for research, Multilingual support

**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 EYT Go/NoGo free?

EYT Go/NoGo costs $9.99, with no in-app purchases.

### Is StroopEffect2 free?

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

### Do EYT Go/NoGo or StroopEffect2 have ads?

Neither EYT Go/NoGo nor StroopEffect2 shows ads.

### Which is updated more often, EYT Go/NoGo or StroopEffect2?

EYT Go/NoGo ships an update every 2 months, and StroopEffect2 every 14 months. Most recently, EYT Go/NoGo was updated on September 16, 2026 and StroopEffect2 on October 3, 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.*