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Sim Daltonism is a color-blindness simulator for OS X. It filters in real-time the area around the mouse pointer and displays the result - as seen by a color blind person - in a floating palette.

What's New

Version 2.0.2:
  • Fix for dragging the filter window; this was broken on macOS High Sierra.


  • OS X 10.10 or later

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Sim Daltonism User Discussion

4.5 9


Current Version (2.x)


Downloads 7,363
Version Downloads 139
License Free
Date 21 Sep 2017
Platform Intel 64 / OS X
Price Free
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