# Color Theory Quick Reference vs Environmental Science Quiz

The clearest difference is device support: Environmental Science Quiz at 3 against Color Theory Quick Reference's 1. Color Theory Quick Reference's advantage is price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Color Theory Quick Reference costs $0.99 and Environmental Science Quiz $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Color Theory Quick Reference ships an update every 26 months, Environmental Science Quiz every 40 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Color Theory Quick Reference | Environmental Science Quiz |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/color-theory-quick-reference/id556166568/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 26 months** | Every 40 months |
| Monetization | Paid | — |
| Size | 4 MB | 21 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Coskun CAKIR](https://appshunter.io/developer/482066275) |

## What reviewers say

### Color Theory Quick Reference

[App page](https://appshunter.io/ios/app/color-theory-quick-reference/id556166568)

This app provides a simple way to understand color interactions for beginners. It offers informational content on various color concepts and includes a quiz to test knowledge. Ideal for students and teachers in introductory art and design.

**Highlights:** Informational tool for color concepts, Interactive color information, Quiz for knowledge testing, Drag and drop color relationships, Covers primary, secondary, and intermediate colors, Explains complementary and split-complementary colors

**Features:** macOS Compatibility

**In-app purchases:** none


### Environmental Science Quiz

[App page](https://appshunter.io/ios/app/environmental-science-quiz/id1359191108)

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

**In-app purchases:** none


## Frequently asked questions

### Is Color Theory Quick Reference free?

Color Theory Quick Reference costs $0.99, with no in-app purchases.

### Is Environmental Science Quiz free?

Environmental Science Quiz costs $1.99, with no in-app purchases.

### Do Color Theory Quick Reference or Environmental Science Quiz have ads?

Neither Color Theory Quick Reference nor Environmental Science Quiz shows ads.

### Which is updated more often, Color Theory Quick Reference or Environmental Science Quiz?

Color Theory Quick Reference ships an update every 26 months, and Environmental Science Quiz every 40 months. Most recently, Color Theory Quick Reference was updated on October 23, 2026 and Environmental Science Quiz on October 26, 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.*