# Color Theory Studio vs MarkBy

The clearest difference is price: MarkBy at Free against Color Theory Studio's $2.99. MarkBy also leads on update cadence (every 5 days vs monthly) and iOS requirement (18.0 vs 26.0). Color Theory Studio's advantage is chart position (#199 vs unranked). On ads, in-app purchases and device support there is nothing between them.

MarkBy is free to download; Color Theory Studio costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Color Theory Studio ships an update monthly, MarkBy every 5 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Color Theory Studio | MarkBy |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/color-theory-studio/id6756895339/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Paid | — |
| Best chart rank | **#199** | — |
| Size | 8 MB | 76 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Imran Gul](https://appshunter.io/developer/1445508793) | [Houma Econimic Development Zone Jianmin Decoration Material Co., Ltd.](https://appshunter.io/developer/1842123085) |

## What reviewers say

### Color Theory Studio

[App page](https://appshunter.io/ios/app/color-theory-studio/id6756895339)

**Currently charting:** #199 Top Paid · Graphics & Design (US App Store)

Explore the science and art of color with interactive challenges and a free-form creative studio. Experiment with hues, values, and placement to master visual perception and create stunning graphic art.

**Highlights:** Interactive color theory challenges, Free-form creative studio, Precision knife and eye dropper tools, Image import for collage making, Color harmony generator, Layer system, Export as PNG and Vector PDF

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MarkBy

[App page](https://appshunter.io/ios/app/markby/id6779934955)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Color Theory Studio free?

Color Theory Studio costs $2.99, with no in-app purchases.

### Is MarkBy free?

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

### Do Color Theory Studio or MarkBy have ads?

Neither Color Theory Studio nor MarkBy shows ads.

### Which is updated more often, Color Theory Studio or MarkBy?

Color Theory Studio ships an update monthly, and MarkBy every 5 days. Most recently, Color Theory Studio was updated on October 28, 2026 and MarkBy on October 28, 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.*