# SynQuiz vs CaQ Arithmetic Premium

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.

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.

## The numbers

| Metric | SynQuiz | CaQ Arithmetic Premium |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[1.6 (7 ratings)](https://appshunter.io/ios/app/synquiz/id960687121/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 10 months** |
| Monetization | Free | — |
| Size | 16 MB | 43 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Radboud University Nijmegen](https://appshunter.io/developer/624561804) | [Manus Breuking](https://appshunter.io/developer/942279297) |

## What reviewers say

### SynQuiz

[App page](https://appshunter.io/ios/app/synquiz/id960687121)

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.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### CaQ Arithmetic Premium

[App page](https://appshunter.io/ios/app/caq-arithmetic-premium/id1499393915)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SynQuiz free?

SynQuiz is free to download, with no in-app purchases.

### Is CaQ Arithmetic Premium free?

CaQ Arithmetic Premium costs $1.99, with no in-app purchases.

### Do SynQuiz or CaQ Arithmetic Premium have ads?

Neither SynQuiz nor CaQ Arithmetic Premium shows ads.

### Which is updated more often, SynQuiz or CaQ Arithmetic Premium?

SynQuiz ships an update every 31 months, and CaQ Arithmetic Premium every 10 months. Most recently, SynQuiz was updated on October 9, 2026 and CaQ Arithmetic Premium on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*