# Sim Daltonism — Color blind camera

> Simulates various types of color blindness for visual understanding. (iPhone/iPad app by Michel Fortin.)

- Source: https://appshunter.io/ios/app/sim-daltonism/id1050503579 (this page in markdown: same URL + `.md`)
- Developer: [Michel Fortin](https://appshunter.io/developer/692938914)
- Category: Photo & Video, Education
- Price: Free
- Rating: 4.80/5 from 164 App Store ratings · 28 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 2 MB
- Languages: American English, French (France)
- Released: 2016-01-28
- Data updated: 2026-08-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sim-daltonism/id1050503579/reviews.md

## What is Sim Daltonism?

From the perspective of a color blind person, some colors are impossible to distinguish. Sim Daltonism lets you visualize colors as they are perceived with various types of color blindness.

Point your camera at something and let Sim Daltonism show you what it looks like to a color blind person. Use it to improve visual designs by making them more accessible, to understand better strange colors choices on a child’s drawing, or simply to get a better understanding of the world from the perspective of a color blind person.


Simulated Vision

Sim Daltonism can simulate the vision of many forms of color blindness:

Red-Green
• Deuteranopia (no green cones)
• Deuteranomaly (anomalous green cones)
• Protanopia (no red cones)
• Protanomaly (anomalous red cones)
Blue-Yellow
• Tritanopia (no blue cones)
• Tritanomaly (anomalous blue cones)
All colors
• Monochromacy
• Partial monochromacy

Note that the colors shown are only an approximation. Color blindness varies from person to person and the simulator cannot represent everyone’s vision. Many other factors can affect the results, such as the automatic white point calibration of the camera. Nevertheless, Sim Daltonism is a good tool to better understand color blindness.

Sim Daltonism is open source.

## Key features

- Simulates red-green color blindness
- Simulates blue-yellow color blindness
- Simulates monochromacy
- Real-time camera view
- Improves design accessibility
- Open source

## Recent user reviews (10 of 28)

All indexed reviews: https://appshunter.io/ios/app/sim-daltonism/id1050503579/reviews.md

### 5/5 — Colour Blind Camera Sim

*2026-06-24, version 2.1.5*

This shows you the problems colour Blind people have identifying colours, and how drab the outside world can be.
A straight forward app, that can specialise in colour Blind specifity for each trait of colour blindness.

### 5/5 — Danke!

*2025-12-25, version 2.1.5*

Tolle minimalistische App. Endlich die Welt der Rot-Grün-Schwäche verstehen.

### 5/5 — FANTASTIC App

*2025-05-13, version 2.1.5*

An example of great interface design - simple to use and with great utility.

This has helped me understand how family members see the world.

Thank you developers - great job.

### 5/5 — Essential Development Tool

*2025-04-01, version 2.1.5*

I’ve used Sim Daltonism for many years, to ensure that my apps are usable by as many folks as possible.

### 5/5 — A suggestion

*2024-01-17, version 2.1.5*

I was wondering if y’all can add an option for cat and dog vision, we already know they see less colors than us, the closest I can find to cat vision based on my research is protanomaly but it’s not exact, something like this would help with buying toys my cats will actually play with, plus I wana see the world through thier eyes

### 5/5 — “Eye” opening

*2022-10-01, version 2.1.5*

I have a child who is colorblind and I’ve always wondered what the world looks like through his eyes. Now I can see exactly that! I had him test it for me to make sure the colors lined up with what he sees, and for deuteranomoly, it is spot on!

### 5/5 — I'm glad this is still available

*2022-09-30, version 2.1.5*

This is a crucial tool for anyone who wants to understand, well, anything. Our default is ourselves and everything we do in order to stretch the view? Hallelujah! That means if the "only" thing someone begins to understand is unique between them and another person is color and other differences in visual perception *and* they should make accommodations their worldview may shift. - — - I didn’t write that metaphorically but because a huge part of our brains are dedicated to vision it’s hard to not be metaphorical and literal.

### 4/5 — A little piece of advice

*2022-07-30, version 2.1.5*

So I tested this and I myself have protanomaly, and, fun fact, the reds actually are the same as a normal persons perception of red. It is just hard to differentiate purple from blue, dark red from brown and yellow from lime. I’m criticizing I’m just trying to give some advice.

### 5/5 — Accurate

*2022-03-04, version 2.1.5*

Great! As someone who actually has a mild form of deuteranamaly, this is accurate!

### 4/5 — Extremely Helpful!

*2022-02-09, version 2.1.5*

As a UX designer this app is amazing. But when you take pictures I would like an option  for a label that tells you which type of color blindness is being used

## Frequently asked questions about Sim Daltonism

### What does Sim Daltonism do?

Sim Daltonism allows you to see the world through the perspective of someone with various types of color blindness. By pointing your camera at objects, the app simulates how colors are perceived by individuals with different color vision deficiencies.

### What types of color blindness can it simulate?

The app can simulate several forms of color blindness, including red-green deficiencies like Deuteranopia, Deuteranomaly, Protanopia, and Protanomaly. It also simulates blue-yellow deficiencies such as Tritanopia and Tritanomaly, as well as complete color blindness (Monochromacy) and partial monochromacy.

### Is Sim Daltonism accurate?

The colors shown are an approximation, as color blindness varies greatly from person to person. The simulator cannot represent everyone's vision perfectly, and factors like camera white point calibration can affect results. However, it serves as a valuable tool for gaining a better understanding of color blindness.

### Who would benefit from using this app?

This app is beneficial for designers looking to improve the accessibility of their visual designs, parents wanting to understand their child's drawings better, and anyone curious about experiencing the world from the perspective of a color blind individual.

### Is there a cost to use Sim Daltonism?

No, Sim Daltonism is completely free to use. It is also open source, meaning its code is publicly available.

## Version history (last 5 releases)

### 2.1.5 — 2020-06-18

• Corrected an issue with the filter where some saturated blues would incorrectly become purple.

### 2.1.4 — 2020-05-09

• Added support for iOS dark mode.

### 2.1.2 — 2019-04-15

• Better support for new iPhone et iPad screen sizes.

### 2.1.1 — 2018-01-17

• Fixing crash when Save Image is chosen from the share button.

### 2.1 — 2017-09-16

• Added share button to send filtered photos around.

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| --- | --- | --- | --- |
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## More apps by Michel Fortin

- [Red Stripe](https://appshunter.io/ios/app/red-stripe/id997446505)
- [Gamma Board](https://appshunter.io/ios/app/gamma-board/id1247128865)
- [Scenica Player](https://appshunter.io/ios/app/scenica-player/id1575790199)

All apps by Michel Fortin: https://appshunter.io/developer/692938914

## Related topics

[color blind help](https://appshunter.io/ios/topics/color-blind-help) · [sim daltonism](https://appshunter.io/ios/topics/sim-daltonism) · [color blind simulator](https://appshunter.io/ios/topics/color-blind-simulator) · [chromatic vision simulator](https://appshunter.io/ios/topics/chromatic-vision-simulator) · [color blind camera](https://appshunter.io/ios/topics/color-blind-camera) · [color blind filter](https://appshunter.io/ios/topics/color-blind-filter) · [color blind](https://appshunter.io/ios/topics/color-blind) · [color blindness app](https://appshunter.io/ios/topics/color-blindness-app)

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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 2026-08-13.*