About Chromatic Vision Simulator
“Chromatic Vision Simulator” is a color vision simulation tool which simulates the color vision of color vision deficiencies. This software is developed by Kazunori Asada (Ph.D. medical science and Ph.D. media design),...
“Chromatic Vision Simulator” is a color vision simulation tool which simulates the color vision of color vision deficiencies. This software is developed by Kazunori Asada (Ph.D. medical science and Ph.D. media design), based on the research in color science. About 5% of men have difficulty distinguishing red and green, or recognizing dark red. Such color deficiency can be classified into three major categories: protanope / Protanomal, Deuteranope / Deuteranomal and Tritanope / Tritanomal. Color deficiencies are the inability to tell differences between some colors other people can easily distinguish. People with different types of color vision deficiency perceive colors differently. For example, individuals diagnosed as Protan or Deutan cannot perceive differences between red and green, and pink and cyan. These color visions are predictable by calculating working of the cone cells that perceives the color to some degree. "Chromatic Vision Simulator" makes simulated images of each color vision type from built-in Camera or Photos and shows you how people with specific types of color vision sees the world in real-time.
Previous Versions
Here you can find the changelog of Chromatic Vision Simulator since it was posted on our website on 2016-09-29 15:29:26.
The latest version is 2.43 and it was updated on 2026-06-23 08:10:39. See below the changes in each version.
Chromatic Vision Simulator version 2.43
Updated At: 2026-06-02
Changes: Version History Fixed a bug that caused the screen to shift when launching the app in landscape orientation on an iPad. Changed the color of the toolbar when in dark mode. 2.43 07/02/2024 Fixed a bug that the camera image rotates in landscape orientation on iOS16. 2.42 09/23/2022 Fixed a bug that the ”Color vision selection buttons" becomes smaller when rotating on some models. 2.41 01/26/2021 Supports various screen sizes. Compatible with the latest iOS. 2.4 01/25/2021 Fixed a bug that crashes immediately after displaying splash when used with iOS 9 or lower. 2.31 12/08/2017 Supports iPhone X screen size. 2.3 12/06/2017 iOS 8, iPhone 6 and iPhone 6 Plus are fully supported. 2.2 06/26/2015 Fixed issue with layout which is confused on iOS7. 2.11 09/24/2013 Supports the simulation of the image from the "Photo Album".
Supports the "Simulation Intensity". 2.1 09/08/2013 Supports iPhone 5 screen.
Fixed problem that only a white screen is saved when the save screen button is pushed on iOS6. 2.02 10/05/2012 2.0 -> 2.01:
- The bug that sometimes mistakes the color vision type letters in stored images is fixed.
- The shutter sound is change to off when the silent switch is on.
1.01 -> 2.0:
"Chromatic Vision Simulator" is updated to version 2.0 with many new cool functions.
- Universal Application
Compatible with iPhone 3GS, iPhone 4, iPod Touch 4G and iPad 2.
- High Resolution
With iPad 2, it works with 768 x 1024 high resolution. You can see details clearly.
- Parallel Simulation
Supports realtime parallel simulations (dual and quad) of different types of color vision simultaneously.
The dual mode shows a normal color vision image (type C) and a one of dichromat color vision (type P or D or T) simulation image together. And the quad mode shows all four types (C, P, D and T) simulation images together.
- Rotation
Supports native portrait and landscape orientations user interface.
- Digital Zoom (max 3x)
A digital 3x zoom is supported. You can zoom in and out simulated images by pinching with two-finger.
- Front Camera
A front camera is now enabled on iPhone 4, iPod Touch 4G and iPad 2.
- Storing Simulated Images
Simulated images including the dual and the quad mode can be stored in the "Photo Album".
- Geotag
A "Geometry tag" (geotag) can be saved in simulation images.
A geotag is added when you allow this app to use location data by sliding the switch to "ON" in "Settings" - "Location Services" page. 2.01 07/18/2011 "Chromatic Vision Simulator" is updated to version 2.0 with many new cool functions.
- Universal Application
Compatible with iPhone 3GS, iPhone 4, iPod Touch 4G and iPad 2.
- High Resolution
With iPad 2, it works with 768 x 1024 high resolution. You can see details clearly.
- Parallel Simulation
Supports realtime parallel simulations (dual and quad) of different types of color vision simultaneously.
The dual mode shows a normal color vision image (type C) and a one of dichromat color vision (type P or D or T) simulation image together. And the quad mode shows all four types (C, P, D and T) simulation images together.
- Rotation
Supports native portrait and landscape orientations user interface.
- Digital Zoom (max 3x)
A digital 3x zoom is supported. You can zoom in and out simulated images by pinching with two-finger.
- Front Camera
A front camera is now enabled on iPhone 4, iPod Touch 4G and iPad 2.
- Storing Simulated Images
Simulated images including the dual and the quad mode can be stored in the "Photo Album".
- Geotag
A "Geometry tag" (geotag) can be saved in simulation images.
A geotag is added when you allow this app to use location data by sliding the switch to "ON" in "Settings" - "Location Services" page. 2.0 07/01/2011 Fixed bug: The aspect ratio was not 1:1. 1.01 09/17/2010 1.0 08/31/2010
Chromatic Vision Simulator version 2.43
Updated At: 2024-07-02
Changes: Jul 2, 2024
Version 2.43
Fixed a bug that caused the screen to shift when launching the app in landscape orientation on an iPad. Changed the color of the toolbar when in dark mode.
Chromatic Vision Simulator version 2.43
Updated At: 2024-07-02
Changes: Fixed a bug that caused the screen to shift when launching the app in landscape orientation on an iPad. Changed the color of the toolbar when in dark mode.
Chromatic Vision Simulator version 2.42
Updated At: 2022-09-23
Changes: Sep 23, 2022
Version 2.42
Fixed a bug that the camera image rotates in landscape orientation on iOS16.
Chromatic Vision Simulator version 2.2
Updated At: 2010-08-31
Disclaimer
Official App Store Link
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