# SynQuiz

> Tests for grapheme-colour synaesthesia and potential participation in genetic studies. (iPhone/iPad app by Radboud University Nijmegen.)

- Source: https://appshunter.io/ios/app/synquiz/id960687121 (this page in markdown: same URL + `.md`)
- Developer: [Radboud University Nijmegen](https://appshunter.io/developer/624561804)
- Category: Education
- Price: Free
- Rating: 1.60/5 from 7 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 16 MB
- Languages: American English
- Released: 2015-03-20
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/synquiz/id960687121/reviews.md

## What is SynQuiz?

SynQuiz is an app that contains four playful tests for synaesthesia. Synaesthesia is a neurodevelopmental trait estimated to occur in about 4% of the general human population. For people with synaesthesia two or more senses appear to be interconnected; for example a synaesthete perceives certain concepts, such as letters, numbers, days of the week, or months of the year as inherently coloured. Many synaesthetes are not aware that their perceptions are unusual and are often surprised to find out that others do not think of letters, numbers, or weekdays in colours.

SynQuiz tests this type of synaesthesia, frequently referred to as grapheme-colour synaesthesia. The first three short quizzes are designed to give you a taste of what synaesthesia might be like and find out whether you might be experiencing it yourself. The fourth full test for letters & numbers gives an indication whether your type of synaesthesia is suitable for the ongoing genetic studies at the Max Planck Institute for Psycholinguistics. If so, you can directly apply and you may be invited later to provide a small sample of saliva (from which we can obtain your DNA).

SynQuiz is developed within the Language in Interaction project (a large language-brain research project), in which currently more interesting language apps are being developed.

Features:
- Three playful quizzes testing synaesthesia for 1) letters and numbers, 2) days of the week, or 3) months of the year. 
- One longer test for letters & numbers after which you can directly apply for participating in ongoing genetic studies 
- Post your test scores to social media
- Languages: English, German and Dutch

## Key features

- Four playful synaesthesia tests
- Grapheme-colour synaesthesia assessment
- Application for genetic studies
- Test scores sharing
- English, German, and Dutch languages

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/synquiz/id960687121/reviews.md

### 1/5 — Please fix.

*2018-09-13*

Sadly doesn't work and just keeps showing an error every time I try to do a quiz. :(

### 1/5 — .

*2018-06-13*

Doesn’t work

### 1/5 — Has a glitch

*2018-03-15, version 1.1.159*

Tried to take each of the tests, but kept getting a syntax error message that resulted in the tests being marked as complete before I could even start to take them.

### 1/5 — Does not work

*2018-03-11, version 1.1.159*

I tried to use this app and it says syntax error and marks the tests as complete. I sent a message to them and hope to get a response. However, it looks like I’m not the only one with this problem.

### 1/5 — Cant use it

*2018-03-09, version 1.1.159*

Keep getting syntax errors, with tests being marked complete.

### 1/5 — Doesn’t work

*2018-02-25, version 1.1.159*

Doesn’t work. Bad code 
Gives “incorrect string” error

## Frequently asked questions about SynQuiz

### What is SynQuiz?

SynQuiz is an educational app offering four playful tests to help users explore and understand grapheme-colour synaesthesia. It also provides an opportunity to apply for ongoing genetic studies.

### What kind of synaesthesia does SynQuiz test for?

SynQuiz specifically tests for grapheme-colour synaesthesia, where individuals perceive letters, numbers, or other graphemes as inherently coloured. The app offers tests for letters & numbers, days of the week, and months of the year.

### Can I participate in genetic studies with SynQuiz?

Yes, after completing the longer test for letters & numbers, you can directly apply to participate in ongoing genetic studies at the Max Planck Institute for Psycholinguistics if your synaesthesia type is suitable.

### What is the learning methodology of SynQuiz?

SynQuiz employs a playful, quiz-based learning methodology. It aims to give users a taste of what synaesthesia might be like and help them discover if they experience it themselves through interactive tests.

### How does SynQuiz track progress?

SynQuiz provides test scores after each quiz, allowing users to see their results. These scores can also be posted to social media, offering a form of progress sharing.

### What devices does SynQuiz support?

SynQuiz is available on iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users interested in exploring synaesthesia.

### What is the age rating for SynQuiz?

SynQuiz has an age rating of 4+, indicating it is suitable for children and adults alike who are interested in the educational content about synaesthesia.

### Does SynQuiz have ads?

No, SynQuiz does not contain advertisements. It is a completely ad-free application, ensuring an uninterrupted user experience.

## Version history (last 3 releases)

### 1.2.2452 — 2020-03-27

Updated the colour picker screen to prevent errors on some devices.

### 1.1.159 — 2015-03-28

Added the new LIL logo version from the graphic designer.

### 1.1 — 2015-03-20

No release notes.

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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 2026-06-11.*