Introducing Red Stripe

As with many great ideas, this seems obvious in retrospect, but it never occurred to do it me until recently. I spent a few weeks before WWDC turning that idea into a product. And that idea got much farther than I initially expected. I’m quite pleased today to introduce you to Red Stripe for Mac and iOS.

Red Stripe is a tool to help people with a red-green color blindness distinguish colors they usually have difficulty telling apart. It works by emphasizing the red color component with a stripe pattern proportionally to its intensity relative to the blue and green component of the color. Colors such as orange, red, and purple will have a stripe overlay, while greens and blues will not.

Red Stripe for iOS is an augmented reality tool that feeds from your iPhone or iPad camera to display a world with the stripe pattern added.

It can be downloaded from the App Store for $4.99 USD.

Red Stripe for Mac displays a filtered view of the area underneath the Red Stripe window. It lets you click through the window to interact with the content underneath it.

Download it here for a free trial, and purchase it on the michelf.ca Store or the Mac App Store for $8.99 USD.


Color Blindness is a vision deficiency that affects a significant percentage of the population. It is the result of a reduced number of red, green, or blue cones on the retina, and is caused generally by defective genes on the X chromosome. You can learn more about it on Wikipedia.

For the non-color blind who want get a feel of what things look like with a color blindness, take a look at Sim Daltonism.


  • © 2003–2017 Michel Fortin.