DaltoTest - Color Blind Test
Color vision screening
Free · Designed for iPad. Not verified for macOS.
DaltoTest screens color vision wherever you are, with five methods inspired by ophthalmology: no appointment, no specialized equipment, no account to create.
FIVE METHODS
• Ishihara plates: numbers hidden in colored dots, red-green screening
• Farnsworth D-15: arrange 15 caps in a gradient, blue-yellow coverage
• Extended FM-100 test: 96 caps in 4 rows, more sensitive to mild deficiencies
• Lantern test: identify brief signal lights, professional-qualification style
• Test inspired by the Cambridge Colour Test: spot a ring hidden in a dot mosaic
Wondering about your color vision? It happens: you wonder if you really see red and green the way everyone else does, or if your kid keeps mixing up colors at school. DaltoTest lets you check in a few minutes, wherever you are, no appointment needed.
PRIVATE BY DESIGN
• All data stays on your device
• No account, no server, no sync
• No data is ever sent anywhere
• No analytics or advertising tracking tools
DaltoTest is not a medical device. This is a screening tool, for informational purposes only. It does not replace an examination by a healthcare professional. If in doubt about a result, consult an ophthalmologist.
Ratings & Reviews
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Added a quick way to rate DaltoTest right from the About screen.
The developer, Olivier Morel, 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
- Olivier Morel
- Size
- 22.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 DaltoTest by Olivier Morel
