The Simon Effect game may seem simple at first: a colored box appears and you just tap the button that has the same name as the color of the box. But here’s the thing: sometimes the box appears right above the correct button and sometimes it appears above the incorrect button. It doesn’t sound too confusing but surprisingly it is!

In this game you’ll learn about the Simon Effect. It’s similar to the Stroop Effect but with a twist and you’d be surprised how important a role this twist plays in your own life. Whenever you try to operate your phone, your oven or your car you’re working with the Simon Effect: it’s always better if the stimulus and the response are in the same approximate location.

What’s New

Version 1.2

This app has been updated by Apple to use the latest Apple signing certificate.

App video demonstrates how the app works and some real world examples.

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

Kevin VanderLugt ,

Great Learning Game!

This game really explained the Simon Effect well.
My score was a lot different without the effect!


Michael Britt
6.9 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese

Age Rating


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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