Ishihara Color Blind Test
Color deficiency screening
Free · Designed for iPad. Not verified for macOS.
Ishihara Color Blind Test is a free app designed for initial color vision screening and awareness. It provides multiple collections of Ishihara plates for both exploration and self-testing.
FEATURES
* 38/24/14 high-quality plates (SVG+) created by Martin Krzywinski / Canada's Michael Smith Genome Sciences Centre
* Additional test contents with plates generated using Ishihara Plate Generator: https://franciscouzo.github.io/ishihara/
* Test mode with result summary and general indication of possible color vision deficiency
* Simple and intuitive navigation (touch or physical keyboard)
* Optionally override the default settings of each test content to always randomize plates, randomize buttons and use all plates.
* The plate size automatically scales to match the screen width by default, with an option to use an adjustable fixed size if preferred.
KEYBOARD SUPPORT
* [Home] : First Plate
* [←] : Previous
* [→] : Next
* [End] : Last
* [K] : Start Test
* [S] : Stop and Summarize Results
* [Num] keys : Select the right answer using a num key according to the num badge of the answer buttons
IMPORTANT NOTICE
This app is intended for preliminary screening and educational purposes only. Ishihara plates displayed on digital screens cannot replace professionally administered colour vision testing. Variations in LCD/LED displays, brightness, colour calibration, and ambient lighting can affect colour perception and may lead to inaccurate or inconsistent results.
By using this app, you acknowledge its limitations and understand that results are indicative only. This app is designed to raise awareness and support early self-screening, not to provide medical advice, diagnosis, or certification.
If you have difficulty identifying numbers or receive unclear results, do not rely on this app for diagnosis. Please consult an optometrist or ophthalmologist for a proper clinical assessment, especially if colour vision is important for work, study, or daily activities.
PRIVACY
This app does not collect, store, or transmit any personal data.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Supported Languages for UI and contents:
Arabic ~ العربية
German ~ Deutsch
Spanish ~ español
French ~ français
Hindi ~ हिन्दी
Italian ~ italiano
Japanese ~ 日本語
Korean ~ 한국어
Portuguese ~ português
Russian ~ русский
Turkish ~ Türkçe
Vietnamese ~ Tiếng Việt
Simplified Chinese ~ 简体中文
Traditional Chinese ~ 繁體中文
The developer, zijian huang, 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
- zijian huang
- Size
- 4 MB
- Category
- Medical
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 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
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- Copyright © 2026 Fonlow