# Visuallusion

> Visual illusions demonstrate brain information processing with neuronal explanations. (iPhone/iPad app by Thom Oostendorp.)

- Source: https://appshunter.io/ios/app/visuallusion/id406375240 (this page in markdown: same URL + `.md`)
- Developer: [Thom Oostendorp](https://appshunter.io/developer/406375243)
- Category: Medical, Education
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 2 MB
- Languages: American English
- Released: 2010-12-05
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/visuallusion/id406375240/reviews.md

## What is Visuallusion?

Visuallusion uses  visual illusions to explain how information is processed by the brain.

The user can choose from a list of visual illusions. Instructions on what to look for are provided, and the illusion is shown. Explanation of the illusion on a neuronal level is provided, which will assist the user in understanding the basics of neural information processing in the human brain.

Vissuallusion is used at the St. Radboud Medical School in Nijmegen, the Netherlands, in a course on the visual system.

## Key features

- Interactive visual illusions
- Neuronal explanations
- Information processing insights
- Medical education tool
- Understanding the visual system

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/visuallusion/id406375240/reviews.md

### 4/5 — Interesting but buggy

*2018-11-05*

Unfortunately the app crashes when trying to view structure from motion demo (iOS 12.1 on IPhone X)

### 5/5 — Good job

*2012-01-08*

Explanations are quite well.

## Frequently asked questions about Visuallusion

### What is Visuallusion?

Visuallusion is a free educational application that uses visual illusions to explain how the brain processes information. It provides explanations on a neuronal level to help users understand neural information processing.

### Is Visuallusion suitable for all ages?

Visuallusion has an age rating of 4+, making it accessible for a wide range of users. Its content is designed to be educational and informative.

### What devices does Visuallusion support?

Visuallusion is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### When was Visuallusion last updated?

The latest version of Visuallusion was released on December 6, 2021. The app was initially released on December 5, 2010.

### What is the user rating for Visuallusion?

Visuallusion has a perfect rating of 5.0 stars based on one review. This indicates a highly positive user experience from its current reviewers.

### Does Visuallusion have ads?

No, Visuallusion does not contain advertisements. It is a completely ad-free application.

### Is Visuallusion used in academic settings?

Yes, Visuallusion is used at the St. Radboud Medical School in Nijmegen, the Netherlands, as part of a course on the visual system. This highlights its value in formal medical education.

### What kind of information does Visuallusion provide?

Visuallusion provides instructions on what to observe in visual illusions and offers explanations of these illusions on a neuronal level. This helps users grasp the fundamentals of neural information processing.

## Version history (last 5 releases)

### 2.3 — 2021-12-06

Fixed a bug that prevented "Structure from motion" to function properly

### 2.2 — 2021-11-30

Bug fixes

### 2.1 — 2017-10-02

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

64-bit support

### 1.4 — 2012-10-30

iOS 6 compatibility
iPhone 5 compatibility

### 1.3 — 2012-07-06

iPad 3 (retina) compatibility

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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.*