Comparison

Sim Daltonism vs Dehancer Color Test

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sim Daltonism

Visualize the world through the eyes of someone with color blindness. This app simulates various types of color vision deficiencies, allowing users to understand color perception differences. It's useful for improving design accessibility and gaining empathy.

Highlights
  • Simulates red-green color blindness
  • Simulates blue-yellow color blindness
  • Simulates monochromacy
  • Real-time camera view
  • Improves design accessibility
  • Open source
Read full description

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.

About

Dehancer Color Test

This experimental tool assesses your ability to perceive colors under various display conditions. It provides two key metrics: the number of colors you can distinguish and how effectively your current perception matches your theoretical potential. Regular use may help improve your visual perception of color nuances.

Highlights
  • Color perception assessment
  • Measures perceived colors
  • Evaluates perceptual effectiveness
  • Aids in improving visual vision
  • Based on expert color study
  • Anonymized data collection
Features
Read full description

Dehancer Color Test is based on the color perception study by co-founders of Dehancer Pavel Kosenko, Nailya Safarova & Denis Svinarchuk, experts in Image Processing. This experimental tool helps you determine how many colours you perceive under different colour target display conditions. The test results include two values: 1. The number of colors you can perceive It is an index of color perception involving short-term memory. In simpler terms, it represents the ability of aesthetic perception under momentary examination. The result depends on the visual experience and your demand for colour nuance. You can take this test regularly to improve your perceptual vision. 2. The current effectiveness of your perception relative to your theoretical potential With some reservations, the potential represents the limit of your physiological ability, as measured at the level of the sensory visual system. Sensory vision is also trainable, but to a lesser extent. Perception depends on lighting conditions, physical and emotional state, and effort. Also, the results may vary over time and as your visual experience improves. The testing method is part of a live experiment, so we admit measurement inaccuracies. The statistics we collect do not contain personal data and are stored in anonymized form. This app is not intended for medical diagnosis. Any result is normal and reflects your personal demand for nuanced color perception. Dehancer’s mission is to preserve the aesthetic heritage by means of digital tools for color correction and lifelike emulation of analog processes and effects. YOUR PRIVACY IS IMPORTANT TO US Please read the Terms of Use as well as the Privacy Policy carefully. All data is handled under the Terms of Use and Privacy Policy of Dehancer. More details can be found here: https://www.dehancer.com/terms_colortest https://www.dehancer.com/privacy_colortest

Screenshots

Sim Daltonism4 screens
Dehancer Color Test4 screens

Verdict

The call

The clearest difference is update cadence: Dehancer Color Test at every 2 months against Sim Daltonism's every 10 months. Sim Daltonism's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 16.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Sim Daltonism against 4.9 for Dehancer Color Test. Both are backed by a comparable volume of ratings — 167 and 100 respectively. Written reviews are what separate them: 96% of Sim Daltonism's written reviews are positive against 100% of Dehancer Color Test's.

UpkeepUpdate frequency

Sim Daltonism ships an update every 10 months, Dehancer Color Test every 2 months. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
Sim Daltonism versus Dehancer Color Test: the parameters behind the verdict, then further details
ParameterSim DaltonismDehancer Color Test
PriceFreeFree
Rating4.8 (167 ratings)4.9 (100 ratings) — better
Positive reviews96.4% of reviews100.0% of reviews — better
Number of ratings167 — better100
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS9.0 — better16.6
Further details — not scored
Size2 MB46 MB
Age rating4+4+
DeveloperMichel FortinDehancer L.L.C-FZ

Customer experience

Sim Daltonism

All ratings164 ratings
Positive95.1%
Neutral2.4%
Negative2.4%
Written reviews28 reviews
Positive96.4%
Neutral3.6%
Negative0.0%

Dehancer Color Test

All ratings100 ratings
Positive99.0%
Neutral1.0%
Negative0.0%
Written reviews14 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sim Daltonism

No in-app purchases

None

Dehancer Color Test

No in-app purchases

Questions

Is Sim Daltonism free?
Sim Daltonism is free to download, with no in-app purchases.
Is Dehancer Color Test free?
Dehancer Color Test is free to download, with no in-app purchases.
Which has better reviews, Sim Daltonism or Dehancer Color Test?
Dehancer Color Test is rated higher. Sim Daltonism averages 4.8 out of 5 from 167 ratings, while Dehancer Color Test averages 4.9 from 100 ratings.
Do Sim Daltonism or Dehancer Color Test have ads?
Neither Sim Daltonism nor Dehancer Color Test shows ads.
Which is updated more often, Sim Daltonism or Dehancer Color Test?
Sim Daltonism ships an update every 10 months, and Dehancer Color Test every 2 months. Most recently, Sim Daltonism was updated on October 21, 2026 and Dehancer Color Test on October 19, 2026.

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