# Color Master: RGB Quest — Train Your Eye for Color.

> Train Your Eye for Color. (iPhone/iPad app by Nagatomo Miki.)

- Source: https://appshunter.io/ios/app/color-master-rgb-quest/id6762590110 (this page in markdown: same URL + `.md`)
- Developer: [Nagatomo Miki](https://appshunter.io/developer/1891189762)
- Category: Education, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 14 MB
- Languages: English, Indonesian, Japanese, Korean, Portuguese, Spanish, Chinese
- Released: 2026-04-24
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/color-master-rgb-quest/id6762590110/reviews.md

## What is Color Master?

Can you spot the difference between two colors?

Color Master is a color training app that scientifically
sharpens your ability to distinguish colors.
Easy to keep up with — it feels just like a game.


■ 4 Training Modes

· Color Difference
Find the matching color among similar shades.
Difficulty is precisely calibrated using the
scientific metric ΔE. 20 stages.

· Gradient
Sort scrambled colors into the correct order.
Build your ability to read the flow of color.
20 stages.

· Complementary Colors
Find the color opposite on the color wheel.
Deepen your understanding of color relationships.
20 stages.

· Color Code
Identify colors from their HEX code.
Naturally build essential knowledge for designers.
20 stages.


■ Who It's For

• Designers & illustrators
• Anyone looking to sharpen their color sense
• Anyone who wants to learn about color
• Fans of brain training & puzzles


■ Features

• 4 genres × 20 stages each
• In-depth guide content for every stage
• Progress is saved so you can build up gradually
• Ad-free plan available (one-time purchase)

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |



## Version history (last 3 releases)

### 1.2.0 — 2026-06-30

Support for Spanish, Traditional Chinese, Portuguese, and Indonesian has been added.

### 1.0.1 — 2026-05-02

Thank you for playing Color Master.

This update includes the following:

* Improved the in-app UI

Please continue to enjoy the game!

### 1.0.0 — 2026-04-24

No release notes.

## More apps by Nagatomo Miki

- [Fuwari Diary](https://appshunter.io/ios/app/fuwari-diary/id6761737775)
- [HAKOIRI](https://appshunter.io/ios/app/hakoiri/id6771243497)

All apps by Nagatomo Miki: https://appshunter.io/developer/1891189762

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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 2026-07-08.*