# PseudoChromatic ColorTest

> Color vision deficiency test using Ishihara-style images. (iPhone/iPad app by Edward Danley.)

- Source: https://appshunter.io/ios/app/pseudochromatic-colortest/id375608394 (this page in markdown: same URL + `.md`)
- Developer: [Edward Danley](https://appshunter.io/developer/315123663)
- Category: Entertainment, Utilities
- Price: Free
- Rating: 3.50/5 from 6 App Store ratings · 104 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.3 · 17 MB
- Languages: American English
- Released: 2010-06-05
- Data updated: 2026-08-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pseudochromatic-colortest/id375608394/reviews.md

## What is PseudoChromatic ColorTest?

• Are you color blind?

• Know somebody who is color blind?

• Think somebody is color blind?

Contrary to the name color blind, most color blind people are not blind to color. A more accurate description is color deficient. We see color. You just don't see it the same as we do. (Perhaps it is really you who are color deficient and we are normal.)

About 1 in 20 males are color blind. About 1 in 200 women are color blind.

The color blind gene is carried by the daughter to her son. For example, my mothers father was color blind. My daughter's may have a son who is color blind. Not every sibling is color blind as example by none of my brothers are color blind.

These series of images in this app are designed to provide a test which gives a quick assessment of color vision deficiency of congenital origin. This is the most common form of color vision disturbances. They are referred to as the Ishihara for Dr. Shinobu Ishihara (http://en.wikipedia.org/wiki/Ishihara_color_test).

## Key features

- Color vision deficiency assessment
- Congenital color vision deficiency detection
- Ishihara-style image tests
- Quick color vision assessment

## Recent user reviews (10 of 104)

All indexed reviews: https://appshunter.io/ios/app/pseudochromatic-colortest/id375608394/reviews.md

### 4/5 — Helpful, but needs better instructions

*2020-07-29, version 3.0*

Need to put your iPad in vertical mode to use this. Otherwise the images are squished and text that is displayed after each image is not visibl.

Needs instructions to explain how to use it, or a better user interface to make it clear.

But once you figure it out, it seems to be good.

### 5/5 — Perfecta

*2019-11-13, version 3.0*

Funciona Perfecto

### 1/5 — Hoax

*2018-12-26, version 3.0*

Hoax...reviews you see are probably from the developer himself. It just shows pictures

### 5/5 — Love the tracing feature

*2018-04-05, version 3.0*

Thanks so much for an app that includes "colorblind only" plates AND the ability to trace them! Bravo.

### 5/5 — Useful

*2017-08-02, version 2.2*

Will miss this app when it stops working with iOS 11. It's how I found out I was colour-blind and is fun to show people.

### 5/5 — Best app for clinicians

*2016-09-01, version 2.2*

This app includes many different plates: some to rule-out color blindness, some to rule-in color blindness, and some to diagnose which type of color blindness is present.  Unlike other apps out there, this one gives a clinical explanation of why each type of patient would see a particular number. In some of the plates, depending upon the diagnosis of the patient, each person would see a different number, and this app explains why. BRAVO to the app developers on creating such a useful clinical app!

### 5/5 — Nice

*2015-02-21, version 2.2*

This application is usefull to test color problem in eyes

### 4/5 — Suggestion

*2013-05-13, version 2.2*

Good and simple. But be nice to show what each should look like to a normal person... Fade up the coloured dots on demand maybe.

Great though!

### 1/5 — nur noch Werbeterror

*2013-05-13, version 2.2*

früher gut nun nur noch Pop ups mit Kaufwerbung. solange der Kunde sich nicht wehrt, werden wir nur noch veralbert.

### 5/5 — Awesome

*2013-03-14, version 2.0*

I am color blind and this helped me show my girlfriend what it is like for me and how I see things. watching each other trace what we each saw was funny for us both. Great app for showing off color blindness

## Frequently asked questions about PseudoChromatic ColorTest

### What does this app do?

This app provides a series of images designed to assess color vision deficiency, specifically congenital color blindness. It functions similarly to the well-known Ishihara color test, offering a quick evaluation of your ability to perceive colors.

### How does the color test work?

The app presents a series of images that are designed to reveal color vision deficiencies. These images are based on the principles of the Ishihara color test, which uses patterns of colored dots to help identify individuals with difficulty distinguishing certain colors.

### Is this app free to use?

Yes, this application is available for free. There are no in-app purchases or advertisements mentioned, indicating a completely free user experience for the color vision testing features.

### Who is this app for?

This app is intended for anyone who suspects they might be color blind or color deficient, or for those who want to test someone else. It's particularly useful for identifying the most common form of color vision disturbance, which is congenital.

### What kind of color vision deficiency does it test for?

The app is designed to provide a quick assessment of color vision deficiency of congenital origin. This is the most common type of color vision disturbance, often referred to as color blindness.

## Version history (last 5 releases)

### 3.0 — 2017-08-15

This app has been updated by Apple to display the Apple Watch app icon.

Re-written into Swift for iOS 11 support.

### 2.2 — 2013-05-13

Version 2.2
• Describe draw option.
• Allow plate selection.
• Add more information to information panel.
• Now requires iOS 4.3
Version 2.1
• Cleanup iAds in landscape mode.
Version 2.0
• Now requires iOS 4.0
• Allows screen drawing of what images the user sees.

### 2.0 — 2011-07-26

Allows the user to draw on the screen what they see (color blind) and another person to draw what they don't see (color true) or vice versa.

### 1.6 — 2011-03-14

Cleanup iAds on iPad.

### 1.5 — 2010-08-17

• Increase size of text describing the images, now scrollable if necessary.
• Correct typo in description for plate 17.

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## More apps by Edward Danley

- [Flash Boom](https://appshunter.io/ios/app/flash-boom/id320959981)
- [4 K.I.D.S. Sake Food Pantry](https://appshunter.io/ios/app/4-kids-sake-food-pantry/id6753714955)

All apps by Edward Danley: https://appshunter.io/developer/315123663

## Related topics

[pseudochromatic colortest](https://appshunter.io/ios/topics/pseudochromatic-colortest) · [color test](https://appshunter.io/ios/topics/color-test) · [color vision tests](https://appshunter.io/ios/topics/color-vision-tests)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-06.*