# Color Theorem! vs Circubik

The clearest difference is ads: Circubik at none against Color Theorem!'s shown. Color Theorem!'s advantage is update cadence (monthly vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Color Theorem! ships an update monthly, Circubik every 4 months. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Color Theorem! | Circubik |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 4 months |
| Size | 118 MB | 48 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Serenico Labs](https://appshunter.io/developer/1631801659) | [Daniele Ricci](https://appshunter.io/developer/1582860260) |

## What reviewers say

### Color Theorem!

[App page](https://appshunter.io/ios/app/color-theorem/id1659995009)

**Features:** macOS Compatibility

**In-app purchases:** none


### Circubik

[App page](https://appshunter.io/ios/app/circubik/id6499497105)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Color Theorem! free?

Color Theorem! is free to download, with no in-app purchases.

### Is Circubik free?

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

### Do Color Theorem! or Circubik have ads?

Color Theorem! shows ads; Circubik does not.

### Which is updated more often, Color Theorem! or Circubik?

Color Theorem! ships an update monthly, and Circubik every 4 months. Most recently, Color Theorem! was updated on October 10, 2026 and Circubik on October 18, 2026.

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