Color Vision Plates

Name: Color Vision Plates
Rating: 5 (2 reviews)
Author: LanguageCraft

14-plate colorblind screening

Free · Designed for iPad. Not verified for macOS.

2 Ratings
Age Rating

4+
Years
Category

Utilities
Developer

LanguageCraft
Language

EN
English
Size

7.3
MB

Fourteen plates, real methodology, sources cited. A color vision screening built by a colorblind developer, not a marketing funnel. Free, offline, no signup. I'm colorblind. Every "color blind test" app I tried was either a marketing funnel, an ad farm, or scientifically wrong. So I built the one I wanted: real methodology, sources cited, nothing to sign up for. Color Vision Plates is a 14-plate screening for red-green and blue-yellow color vision deficiency. It doesn't just say "you're colorblind." It attempts to classify the type: protan (red-weak), deutan (green-weak), or tritan (blue-yellow), using dedicated classifier plates that vanish for one type but not the other. HOW IT WORKS • Ishihara-style number plates and HRR-style shape plates (the two standard clinical methodologies, in use since 1917 and 1954) • Classifier plate colors generated by simulating dichromatic vision with the Brettel-Viénot-Mollon (1997) model and selecting pairs that survive one deficiency and disappear under the other • All plate colors defined in CIELAB with matched luminance, so hue is the only available cue: no brightness leaks to give the figure away • A display calibration check before the test starts, because a dimmed or Night-Shifted screen produces false positives • A control plate that catches display problems and flags the result as inconclusive instead of guessing • Plate order shuffles and dot patterns reroll on every retake, so you can't memorize an answer key WHAT YOU GET • A plain-English result ("Likely Green-Type Color Difference") with the clinical term alongside for your eye doctor • What the result might mean day-to-day: brake lights, status indicators, charts, ripe fruit • A plate-by-plate review of every answer • Screening history saved on your device, so you can retest over time and compare honestly • The methodology and full citations, one tap away, always THE HONEST PART This is a screening, not a medical diagnosis. Phone screens vary; clinical tests use calibrated printed plates under standardized lighting. The app says this everywhere (before the test, on your results, in your history) because a screening tool that oversells itself is worse than none. If your results suggest a color vision difference, see an eye care professional. PRIVACY No accounts. No tracking. No analytics. No ads. No network calls. The entire test is bundled with the app and runs offline. Your results stay on your device, and you can erase them anytime. THE SCIENCE Ishihara (1917); Hardy, Rand & Rittler (1954); Brettel, Viénot & Mollon (1997); Sharma, Wu & Dalal (2005) for CIEDE2000 color difference; Birch (2012) on prevalence. From the maker of What Color Is This?, the camera color-identifier built for colorblind people. About 1 in 12 men and 1 in 200 women have a color vision difference. Most found out by accident. This is a better way. Made by Luke Steuber. Published by Bridge City Lab LLC.

Ratings & Reviews

5.0

out of 5

2 Ratings

This is great
Jun 16
Dfbfj
Easy and actually fun to use — discovered a mild discrimination deficit I’d had no idea of… it makes sense though. Everybody should try it — I heartily endorse this app.
This is great
Jun 16
Dfbfj

Easy and actually fun to use — discovered a mild discrimination deficit I’d had no idea of… it makes sense though. Everybody should try it — I heartily endorse this app.
Cool tool
Jun 16
beepbeepzipbang
Good thing to check out your vision
Cool tool
Jun 16
beepbeepzipbang

Good thing to check out your vision

Color Vision Plates 1.0.3 is a quiet stability update. - Improves reliability when returning to the app after a screening. - Same 14-plate flow, same on-device history, same free offline screening. Questions: luke@lukesteuber.com.

Version 1.0.3 Jul 28

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supported Features
- VoiceOver
- Voice Control
- Larger Text
- Dark Interface
- Differentiate Without Color Alone
- Sufficient Contrast
- Reduced Motion

Information

Seller: Bridge City Lab LLC
Size: 7.3 MB
Category: Utilities
Compatibility: Requires iOS 16.0 or later.

iPhone
Requires iOS 16.0 or later.

iPad
Requires iPadOS 16.0 or later.

Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English
Age Rating: 4+

4+

Learn More