PluginSift

Simple Custom CSS Plugin vs Guan Mystique Theme Code Inserter (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Simple Custom CSS Plugin

Simple Custom CSS Plugin

4.7(159)

100K+ active installs

Free

Updated 1 year ago
View Simple Custom CSS Plugin
VS
Guan Mystique Theme Code Inserter

Guan Mystique Theme Code Inserter

0(0)

10 active installs

Free

Updated 15 years ago
View Guan Mystique Theme Code Inserter

Quick Verdict

As of April 2026, Simple Custom CSS Plugin has a higher user rating (4.7/5 from 159 reviews) and leads in active installations (100K+ vs 10). Both are free WordPress plugins. Simple Custom CSS Plugin has accumulated 3.1M+ total downloads while Guan Mystique Theme Code Inserter has 2.2K+.

Detailed Comparison

Rating
4.7/5Simple Custom CSS Plugin
◄
Guan Mystique Theme Code InserterN/A
Total Reviews
159Simple Custom CSS Plugin
◄
Guan Mystique Theme Code Inserter0
Active Installs
100K+Simple Custom CSS Plugin
◄
Guan Mystique Theme Code Inserter10
Total Downloads
3.1M+Simple Custom CSS Plugin
◄
Guan Mystique Theme Code Inserter2.2K+
Support Resolution
N/ASimple Custom CSS Plugin
Guan Mystique Theme Code InserterN/A
Last Updated
1 year agoSimple Custom CSS Plugin
◄
Guan Mystique Theme Code Inserter15 years ago
First Released
2013Simple Custom CSS Plugin
Guan Mystique Theme Code Inserter2010
Age
13 yearsSimple Custom CSS Plugin
Guan Mystique Theme Code Inserter16 years
WP Requires
3.0.1+Simple Custom CSS Plugin
Guan Mystique Theme Code Inserter2.5+
PHP Requires
false+Simple Custom CSS Plugin
Guan Mystique Theme Code Inserterfalse+
Business Model
FreeSimple Custom CSS Plugin
Guan Mystique Theme Code InserterFree
Latest Version
4.0.7Simple Custom CSS Plugin
Guan Mystique Theme Code Inserter1.0

Rating Breakdown

Simple Custom CSS Plugin

4.7/5(159 reviews)
5
90%
4
4%
3
1%
2
0%
1
5%

Guan Mystique Theme Code Inserter

0/5(0 reviews)
5
0%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

Simple Custom CSS Plugin Reviews

by Bub

Blocks Media view

This plugin block me from viewing my media files when I am, for instance, trying to add an image block to a page. Except for this I think it is an excellent plugin. My work-around will be to disable t

by cengoguven

So simple yet works perfect!

İt’s so easy to use and does the job as described.

by ellissei

Useful but doesn’t know modern properties

Simple and useful, but modern CSS properties like clamp(), repeat(), margin-inline, or less common units like dvh throw syntax errors. For beginners, this can be really confusing.

Guan Mystique Theme Code Inserter Reviews

No reviews yet

Frequently Asked Questions

Is Simple Custom CSS Plugin or Guan Mystique Theme Code Inserter more popular?
Simple Custom CSS Plugin has 100K+ active installations while Guan Mystique Theme Code Inserter has 10. Simple Custom CSS Plugin is the more widely-used plugin as of April 2026.
Which has better ratings — Simple Custom CSS Plugin or Guan Mystique Theme Code Inserter?
Simple Custom CSS Plugin has a 4.7/5 rating from 159 reviews, while Guan Mystique Theme Code Inserter has a 0/5 rating from 0 reviews.
Are Simple Custom CSS Plugin and Guan Mystique Theme Code Inserter free?
Simple Custom CSS Plugin is free and Guan Mystique Theme Code Inserter is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Simple Custom CSS Plugin or Guan Mystique Theme Code Inserter?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Simple Custom CSS Plugin was last updated 1 year ago and Guan Mystique Theme Code Inserter was last updated 15 years ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.