"Chromatic Glass" is a color vision assistance tool for persons who have difficulty recognizing specific colors or perceiving differences between specific color pairs due to a color vision deficiency.
Congenital color vision deficiency can be classified into three major types: Protanope / Protanomal, Deuteranope / Deuteranomal and Tritanope / Tritanomal. People with different types of color vision deficiency perceive colors differently.
The colors which can be recognized or distinguished by color deficient persons are different from color normal persons. In addition, such conditions may occur owing to an acquired illness.
"Chromatic Glass" helps users to recognize and distinguish such colors by making a special modified color image based on scientific theoretical methods in real-time and displaying it and the original image alternately.
Developed by Kazunori Asada (Ph.D. Medical Science, Ph.D. Media Design)

What’s New

Version 2.2

Supports iPhone X screen size.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Hayward Perez ,

This is Brilliant!

Listening to Science Friday on NPR somehow jogged me into wondering "what if there is a color reader out there that color blind people can point at objects and it will tell them what the color is?" My husband is profoundly color blind (and the irony is that I am an artist and profoundly color sensitive). So many objects that he works with are color coded , like his guitar strings, and I can't always be there to assist him. This app will help in so many ways! No more picking green tomatoes! Thank you thank you!

Scorchgeek ,

Works as advertised

I'm red-green colorblind and this app is a lifesaver for reading graphs and similar information when the colors were chosen poorly (and other everyday annoyances). And I can read nearly all of the standard colorblindness tests with this app.

If you want it to work well, you should give yourself fifteen minutes or so to tweak the settings and figure out how to use the color slider.

The "simulate" button doesn't do anything to my eyes, but my mother (who has normal color vision) told me it turned a red pot green, so I expect that works too.

macnlz ,

True augmented reality! Extremely useful for colorblind people!

Finally a colorblind helper app that does the color modifications in real time! Once I figured out the settings (which are admittedly a bit technical), this app does exactly what I need: it highlights green or red regions in the camera viewfinder in real time! The three presets are also helpful, though I think you have to switch to the settings menu(?) to make changes stick.


Kazunori Asada
19 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating
Rated 4+
© 2014 Kazunori Asada


  • Family Sharing

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

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