SynQuiz vs CaQ Arithmetic Premium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SynQuiz
Explore the fascinating world of synaesthesia with playful tests designed to reveal if you experience interconnected senses. Discover if your grapheme-colour synaesthesia aligns with ongoing genetic research and potentially contribute to scientific studies.
- Four playful synaesthesia tests
- Grapheme-colour synaesthesia assessment
- Application for genetic studies
- Test scores sharing
- English, German, and Dutch languages
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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
CaQ Arithmetic Premium
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The full version of the Correct and Quick Arithmetic Premium app is available especially for schools. The app is free of advertising. With Family Sharing set up, up to six family members can use this app. Correct and Quick Arithmetic Premium does exactly what the name predicts. First practice the basic calculations, and then speed it up. This app was developed for everyone who would like to train and maintain the basic processes of arithmetic. In this app you will find exercises with number bonds to 10, addition and subtraction sums up to 100, and the multiplication and division tables up to and including 10. These are the foundations needed for arithmetic. The ultimate goal is to have committed to memory the answers to number bonds to 10, addition and subtraction sums up to 20, and the tables through 10 (within 2 seconds). For sums up to 100, the way to work them out is automated. No distractions in the app The appearance of the app is kept as simple as possible. Scores are not saved. Experience shows that in particular, those who are not so good in arithmetic, like this! The structure of the levels of mental arithmetic in the app: Number bonds to 10 Addition and Subtraction to 10 Addition and Subtraction to 20 Addition and Subtraction to 100 Multiplications tables from 0 to 5 and 10 Multiplications tables from 6 to 9 Division Tables from 1 to 5 and 10 Division Tables from 6 to 9 First start to practice without timing yourself. In practice mode (X), the correct answer appears after a wrong answer. Wrongly answered sums are always repeated. Only when this goes well will you be able to start training at speed. So first CORRECT and only then QUICK! Stick to the running order of the sums in the app! Practise the number bonds and the sums up to 10 until you can do them all well, and most importantly, fast. These are the most important sums in mental arithmetic!! Level button With this button you can choose between 1 Level or Mix of levels. After a series of sums, a smiley will show how many you got right and how many wrong. The more sums you get right, the happier the smiley is! Ultimately, the reward is realizing just how good it is to be able to do these calculations quickly and correctly. You'll find that the arithmetic that comes later will also go better and more quickly because of it. Correct and Quick Arithmetic Premium is an indispensable instrument, dependent on any method, for learning mental arithmetic! Have fun, and good luck with Correct and Quick Arithmetic Premium! M&M Breuking
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Verdict
The clearest difference is price: SynQuiz at Free against CaQ Arithmetic Premium's $1.99. SynQuiz also leads on iOS requirement (10.0 vs 12.0). CaQ Arithmetic Premium's advantage is update cadence (every 10 months vs every 31 months). On ads, in-app purchases and device support 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
SynQuiz is free to download; CaQ Arithmetic Premium costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SynQuiz ships an update every 31 months, CaQ Arithmetic Premium every 10 months. Both last shipped on October 9, 2026.
| Parameter | SynQuiz | CaQ Arithmetic Premium |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 1.6 (7 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 31 months | Every 10 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 16 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Radboud University Nijmegen | Manus Breuking |
In-app purchases
SynQuiz
No in-app purchases
CaQ Arithmetic Premium
No in-app purchases
Questions
Is SynQuiz free?
Is CaQ Arithmetic Premium free?
Do SynQuiz or CaQ Arithmetic Premium have ads?
Which is updated more often, SynQuiz or CaQ Arithmetic Premium?
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