# StroopTracker — Measure your reaction time

> Measure your reaction time (iPhone/iPad app by Ensembio, Inc..)

- Source: https://appshunter.io/ios/app/strooptracker/id656504137 (this page in markdown: same URL + `.md`)
- Developer: [Ensembio, Inc.](https://appshunter.io/developer/656504140)
- Category: Health & Fitness, Medical
- Price: $4.99
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English
- Released: 2013-06-07
- Data updated: 2026-05-20
- User reviews in markdown: https://appshunter.io/ios/app/strooptracker/id656504137/reviews.md

## What is StroopTracker?

How well do you focus and concentrate right now? 

Designed for self-trackers, this is a quantified self app to let you quickly measure levels of concentration, focus, and attention. Based on the well-known psychological "Stroop Effect", you are presented with a series of randomly-colored cards, which you identify using labels displayed in a randomly-chosen color font. The more cards you can identify in a fixed period of time, the higher your score.

Take the test throughout the day and see if you can spot patterns based on the foods you eat, amount of sleep you had, or other factors.


## Version history (last 5 releases)

### 1.43.1 — 2026-03-03

Updated for iOS 26. Settings menu now shows version number.

### 1.43.0 — 2022-11-19

Updated for iOS 16

### 1.42.0 — 2020-12-09

Updated for iOS 14.2

### 1.41.1 — 2020-07-23

Updated for iOS 13

### 1.4.1 — 2015-06-19

Bug fixes

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## More apps by Ensembio, Inc.

- [BrainTracker](https://appshunter.io/ios/app/braintracker/id1021308220)

All apps by Ensembio, Inc.: https://appshunter.io/developer/656504140

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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 2026-05-20.*