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Simple Custom CSS Plugin vs Custom Functions Starter Kit by… (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
Custom Functions Starter Kit by…

Custom Functions Starter Kit by…

5(1)

10 active installs

Free

Updated 3 years ago
View Custom Functions Starter Kit by…

Quick Verdict

As of April 2026, Custom Functions Starter Kit by… has a higher user rating (5/5 from 1 reviews) while Simple Custom CSS Plugin leads in active installations (100K+ vs 10). Both are free WordPress plugins. Simple Custom CSS Plugin has accumulated 3.1M+ total downloads while Custom Functions Starter Kit by… has 3.2K+.

Detailed Comparison

Rating
4.7/5Simple Custom CSS Plugin
►
Custom Functions Starter Kit by…5/5
Total Reviews
159Simple Custom CSS Plugin
◄
Custom Functions Starter Kit by…1
Active Installs
100K+Simple Custom CSS Plugin
◄
Custom Functions Starter Kit by…10
Total Downloads
3.1M+Simple Custom CSS Plugin
◄
Custom Functions Starter Kit by…3.2K+
Support Resolution
N/ASimple Custom CSS Plugin
Custom Functions Starter Kit by…N/A
Last Updated
1 year agoSimple Custom CSS Plugin
◄
Custom Functions Starter Kit by…3 years ago
First Released
2013Simple Custom CSS Plugin
Custom Functions Starter Kit by…2015
Age
13 yearsSimple Custom CSS Plugin
Custom Functions Starter Kit by…11 years
WP Requires
3.0.1+Simple Custom CSS Plugin
Custom Functions Starter Kit by…4.9+
PHP Requires
false+Simple Custom CSS Plugin
Custom Functions Starter Kit by…false+
Business Model
FreeSimple Custom CSS Plugin
Custom Functions Starter Kit by…Free
Latest Version
4.0.7Simple Custom CSS Plugin
Custom Functions Starter Kit by…2.1.7

Rating Breakdown

Simple Custom CSS Plugin

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

Custom Functions Starter Kit by…

5/5(1 reviews)
5
100%
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.

Custom Functions Starter Kit by… Reviews

No reviews yet

Frequently Asked Questions

Is Simple Custom CSS Plugin or Custom Functions Starter Kit by… more popular?
Simple Custom CSS Plugin has 100K+ active installations while Custom Functions Starter Kit by… 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 Custom Functions Starter Kit by…?
Simple Custom CSS Plugin has a 4.7/5 rating from 159 reviews, while Custom Functions Starter Kit by… has a 5/5 rating from 1 reviews.
Are Simple Custom CSS Plugin and Custom Functions Starter Kit by… free?
Simple Custom CSS Plugin is free and Custom Functions Starter Kit by… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Simple Custom CSS Plugin or Custom Functions Starter Kit by…?
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 Custom Functions Starter Kit by… was last updated 3 years ago.

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