# Color Theory Quick Reference vs LCM GCD Prime Factor Math

The clearest difference is device support: LCM GCD Prime Factor Math at 3 against Color Theory Quick Reference's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Color Theory Quick Reference costs $0.99 and LCM GCD Prime Factor Math $0.99 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, LCM GCD Prime Factor Math every 18 months. The most recent releases landed on June 2, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Color Theory Quick Reference | LCM GCD Prime Factor Math |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| 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 18 months** |
| Monetization | Paid | — |
| Size | 4 MB | 5 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) | [Maria Dolores Garcia Ferre](https://appshunter.io/developer/970100146) |

## 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


### LCM GCD Prime Factor Math

[App page](https://appshunter.io/ios/app/lcm-gcd-prime-factor-math/id1488738897)

**Features:** macOS Compatibility

**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 LCM GCD Prime Factor Math free?

LCM GCD Prime Factor Math costs $0.99, with no in-app purchases.

### Do Color Theory Quick Reference or LCM GCD Prime Factor Math have ads?

Neither Color Theory Quick Reference nor LCM GCD Prime Factor Math shows ads.

### Which is updated more often, Color Theory Quick Reference or LCM GCD Prime Factor Math?

Color Theory Quick Reference ships an update every 26 months, and LCM GCD Prime Factor Math every 18 months. Most recently, Color Theory Quick Reference was updated on June 2, 2026 and LCM GCD Prime Factor Math on May 16, 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.*