In Their Eyes
Color blindness simulator
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Ever wondered how the world looks to someone who's color blind? In Their Eyes lets you see it for yourself.
Point your camera at anything and watch the colors shift in real time to match how a person with color vision deficiency actually perceives them. It's an instant, eye-opening way to understand how color blind people actually see the world.
Color blindness affects roughly 1 in 12 men and 1 in 200 women, over 300 million people worldwide. Most of us never get to experience what that's like. Now you can.
SEE THROUGH THEIR EYES, LIVE
• Real-time camera simulation, just point and look
• Switch instantly between the major types of color blindness
• Take pictures with the color blind filter switched on
FOUR TYPES OF COLOR VISION DEFICIENCY
• Protanopia: red-blindness
• Deuteranopia: green-blindness (the most common form)
• Tritanopia: blue-blindness
• Achromatopsia: total color blindness (grayscale)
WORKS ON YOUR PHOTOS TOO
Load any picture from your library and see it transformed — perfect for checking how you photos look to a color blind person.
CAPTURE AND COMPARE
Save a side-by-side of the normal and simulated view to your photo library, so you can share and review what you discovered.
BUILT ON REAL SCIENCE
The simulations use scientifically validated color transformation matrices (Machado, Oliveira & Fernandes, 2009), the same approach used in professional accessibility tools.
PERFECT FOR
• Anyone who wants to understand how a colorblind friend or family member sees the world
• Teachers and students exploring how vision works
• Designers checking that their work is accessible to everyone
YOUR PRIVACY COMES FIRST
Everything happens on your device. No account, no tracking, no data collection — your camera feed and photos never leave your phone.
See the world in their eyes.
Ratings & Reviews
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Updated App Store screenshots.
The developer, Aaron Moeller, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Aaron Moeller
- Size
- 3.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Aaron Moeller