# Stroop Challenge Go — Cognitive Control · Focus Test

> Cognitive Control · Focus Test (iPhone/iPad app by 晓 郭.)

- Source: https://appshunter.io/ios/app/stroop-challenge-go/id6773266246 (this page in markdown: same URL + `.md`)
- Developer: [晓 郭](https://appshunter.io/developer/1895645928)
- Category: Games
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 1 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-05-28
- Data updated: 2026-09-02
- User reviews in markdown: https://appshunter.io/ios/app/stroop-challenge-go/id6773266246/reviews.md

## What is Stroop Challenge Go?

Stroop Challenge is a precision cognitive training tool based on the Stroop Effect — one of the most replicated findings in experimental psychology — measuring interference between word reading and color recognition.

THE SCIENCE:
The Stroop Effect demonstrates that automatic processing (word reading) can interfere with controlled processing (color identification). Regular exposure to Stroop-type stimuli has been associated with improved selective attention, cognitive flexibility, and processing speed.

TWO VALIDATED MODES:
• Classic (Color-Naming) — Identify the ink color of the presented word. Suppresses automatic reading response.
• Word Match (Word-Reading) — Identify the color named by the word. Tests semantic processing independence.

METRICS TRACKED:
• Score per round (accuracy × speed composite)
• Best accuracy rate (percentage of correct responses)
• Fastest average reaction time (milliseconds per response)
• Session totals: rounds played, correct and incorrect responses
• Combo chains: consecutive correct responses

DIFFICULTY SCALING:
• Easy: 4 color stimuli (Red, Blue, Green, Yellow)
• Medium: 5 color stimuli (adds Purple)
• Hard: 6 color stimuli (adds Orange)

DATA PRIVACY:
All data is stored locally via UserDefaults. No network requests are made. No personal information is collected, transmitted, or shared. The app functions completely offline.

Ideal for daily cognitive warm-up, focus training, or simply exploring one of psychology's most fascinating phenomena.


## Version history (last 1 release)

### 1.0 — 2026-05-28

No release notes.

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All apps by 晓 郭: https://appshunter.io/developer/1895645928

## Related topics

[stroop test j lite](https://appshunter.io/ios/topics/stroop-test-j-lite)

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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 2026-09-02.*