# Stroop Effect

> Psychological test app measuring reaction time to color words. (iPhone/iPad app by Steven Curtis.)

- Source: https://appshunter.io/ios/app/stroop-effect/id1218700885 (this page in markdown: same URL + `.md`)
- Developer: [Steven Curtis](https://appshunter.io/developer/513736269)
- Category: Education
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 47 MB
- Languages: English
- Released: 2017-04-06
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/stroop-effect/id1218700885/reviews.md

## What is Stroop Effect?

The Stroop Effect uses your voice to actually carry out a troop test right on your iPhone or iPad.

A colour appears on the screen and you have to say it: simple. However the word is displayed on the screen in differing modes. Your time to respond is then measured by your device.

John Ridley Stroop studied the effect of of this interference in a widely cited paper in psychology, providing an interesting test for students to measure their reaction time under different conditions.

## Key features

- Voice-activated response measurement
- Color word display
- Reaction time tracking
- Based on psychological research
- Educational tool for students

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/stroop-effect/id1218700885/reviews.md

### 1/5 — Voice input barely works

*2024-10-14*

This game uses voice input. I’m a native English speaker, but the voice input barely works for me. Someone else may have better results?

### 1/5 — Terrible

*2019-09-13*

This is not even testing or challenging the Stroop Effect. 

You probably want “Stroop Effect”, not “StroopEffect”

## Frequently asked questions about Stroop Effect

### What is the Stroop Effect app?

The Stroop Effect app is an educational tool that uses your device's microphone to conduct a Stroop test. It measures your reaction time as you verbally identify the color of a displayed word, which may be a different color than the word itself.

### How does the Stroop Effect app work?

A color word appears on the screen, and you must say the color it is displayed in. The app measures how quickly you respond, demonstrating the interference effect studied by John Ridley Stroop.

### Is the Stroop Effect app free?

Yes, the Stroop Effect app is available for free. It does not have any in-app purchases or require a subscription.

### Does the Stroop Effect app have ads?

No, the Stroop Effect app does not contain advertisements. It is completely ad-free.

### What devices support the Stroop Effect app?

The Stroop Effect app is compatible with iPhones, iPads, and iPods. It is designed for iOS devices.

### What is the age rating for the Stroop Effect app?

The Stroop Effect app has an age rating of 4+. This indicates it is suitable for children aged four and older.

### When was the Stroop Effect app last updated?

The Stroop Effect app was last updated on May 30, 2019, with version 1.02. It was originally released on April 6, 2017.

### What is the user feedback on the Stroop Effect app?

Based on the available data, the Stroop Effect app has received one rating of 1.0 stars. This suggests a very low user satisfaction score.

## Version history (last 3 releases)

### 1.02 — 2019-05-30

Update to layout for 2019 phones.

### 1.01 — 2017-04-07

Added leaderboard to monitor scores.

### 1.0 — 2017-04-05

No release notes.

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## More apps by Steven Curtis

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All apps by Steven Curtis: https://appshunter.io/developer/513736269

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*