What's New

Updated for iOS 16

App Description

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.

iPhone Screenshots

(click to enlarge)

StroopTracker screenshot 1 StroopTracker screenshot 2 StroopTracker screenshot 3 StroopTracker screenshot 4

App Changes

  • June 08, 2014 Initial release
  • September 19, 2014 New version 1.3
  • May 21, 2015 New version 1.4
  • June 20, 2015 New version 1.4.1
  • September 09, 2015 Price decrease: $4.99 -> $0.99
  • September 15, 2015 Price increase: $0.99 -> $4.99
  • October 07, 2015 Price decrease: $4.99 -> $0.99
  • October 15, 2015 Price increase: $0.99 -> $4.99
  • October 22, 2020 New version 1.41.1
  • December 09, 2020 New version 1.42.0
  • September 16, 2023 New version 1.43.0

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