# Visolve for iPhone

> Color vision deficiency assistive software for image and web content transformation. (iPhone/iPad app by Ryobi Systems Co.,Ltd..)

- Source: https://appshunter.io/ios/app/visolve-for-iphone/id324196121 (this page in markdown: same URL + `.md`)
- Developer: [Ryobi Systems Co.,Ltd.](https://appshunter.io/developer/422237051)
- Category: Utilities, Photo & Video
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings · 5 written reviews indexed
- Age rating: 17+
- Requires: iOS 11.0 · 4 MB
- Languages: American English, Japanese
- Released: 2009-08-01
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/visolve-for-iphone/id324196121/reviews.md

## What is Visolve for iPhone?

Visolve is the assistive software for people with color vision deficiency, commonly called color blindness.  Its PC version has been used by many people around the world, and now this is its iPhone version.

Visolve for iPhone can apply the following transformations, which are same as PC version, to an image newly taken by Camera or being saved in Photo Albums, or a webpage being displayed:
   1. Red-Green transform -- transforms redder colors to brighter, and greener colors to darker,
   2. Blue-Yellow transform -- transforms bluer colors to brighter, and yellower colors to darker,
   3. Saturation increase -- increases the saturation of all colors,
   4. Filtering -- darkens all colors other than the specified color, and
   5. Hatching -- draws different hatch patterns according to color.

Those transformations help people to distinguish colors, to find a specific color, or to guess a normal color.  By using Visolve for iPhone, you can take an image and transform its colors anywhere on the spot when you find a scene or a road sign, etc., which consist of indiscriminable colors.

Additionally, it can simulate the appearance of an image for people with color blindness.  By using this feature, people with normal color vision can check how color-blind people see a scene or a caution sign, etc.  Note that, however, it should be used only as a guide.  We DO NOT guarantee the accuracy of the simulation image generated by Visolve.

## Key features

- Red-Green color transform
- Blue-Yellow color transform
- Saturation increase
- Color filtering
- Hatching patterns
- Color blindness simulation
- Image and webpage transformation

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/visolve-for-iphone/id324196121/reviews.md

### 5/5 — Best tool for those who are colourblind

*2019-07-30, version 4.1*

I have used Visolve for many years on my iPad, MacBook Pro, and iPhones 4, 6, 7 and 8. This is the best tool I have ever seen, or used to separate out colours in my pictures or on the web.

I can now easily pick out the red spots and lines, see red-lined text (which was indistinguishable from black to me) and differentiate different colours in graphs making this an invaluable tool. 

Crash problems (from Apple updating its iOS) were fixed several versions ago.

This is my number 1 favourite tool which I wish was part of iOS.

### 1/5 — No Update

*2017-10-26*

App doesn’t work with iOS 11.  Developer needs to update.

### 5/5 — Life Changer

*2012-07-14*

I know "life changer" may sound like an overstatement but I have lived 37 frustrating years not being able to tell when meat was done or whether I was buying green or brown pants. This app fixes all that and really works.

### 5/5 — user

*2012-01-15*

this is awesome!
I am colorblind and this app is so useful  - I use visolve on my PC at work for confocal micrographs that use a merge to create yellow from a mix of red and green n I couldn't tell the difference between the green n yellow - now I can
On the iPhone I use it because I'm a ham radio operator and now i can identify colors of wires and color coded components

### 2/5 — Good idea, needs updating.

*2011-12-26, version 1.0*

I'm colour blind and I wish this program worked great. 

the idea is that it can simulate colour blind vision for people with normal vision, and it can enhance colours so color blind people can use it to see colour differences.

Sadly it needs tuning for iOS 5 - it is pretty crashy.

I also wish that it could do it's job in real time on the camera video feed instead of requiring you to snap pictures.

It does work.  I just wish it worked better.

## Frequently asked questions about Visolve for iPhone

### What is Visolve?

Visolve is an assistive software designed to help people with color vision deficiency. It transforms images and webpages to make colors more distinguishable or to simulate how color-blind individuals perceive them.

### What color transformations does Visolve offer?

Visolve offers Red-Green transform, Blue-Yellow transform, saturation increase, color filtering, and hatching patterns to aid in color distinction.

### Can Visolve simulate color blindness?

Yes, Visolve can simulate the appearance of an image for people with color blindness. This feature allows individuals with normal color vision to see how a scene might appear to someone with color deficiency.

### Is Visolve available on Android?

Based on the provided data, Visolve is specifically for iPhone, iPad, and iPod. Information about an Android version is not available.

### What is the age rating for Visolve?

Visolve has an age rating of 17+. This is likely due to the nature of the utility and its potential use cases.

### How often is Visolve updated?

The latest version of Visolve was released on June 4, 2020. The update frequency is not explicitly stated, but the last update was in 2020.

### What is the user rating for Visolve?

Visolve has a rating of 3.0 stars from 2 ratings. This indicates a mixed reception from its current user base.

### Does Visolve have ads?

No, Visolve does not contain advertisements. The app is free to download and use without any ad interruptions.

## Version history (last 5 releases)

### 4.3 — 2020-06-04

Supported the latest app requirements.

### 4.2 — 2020-02-06

Updated app to work on the latest iOS.

### 4.1 — 2018-11-20

Updated app to work on the latest iOS.

### 4.0 — 2018-01-05

Converted to 64-bit binary to work on the latest iOS.

### 3.0 — 2013-07-16

Updated to be a universal app optimized for iPhone and iPad, and supported all device orientations.

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## More apps by Ryobi Systems Co.,Ltd.

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All apps by Ryobi Systems Co.,Ltd.: https://appshunter.io/developer/422237051

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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 2026-06-05.*