LuckyWP

The “LuckyWP Scripts Control” plugin allows you to insert and manage custom code into website. For example, you can insert Google Analytics code, Google Search Console verification meta tag, Facebook pixel, custom CSS/JS and other code without edit theme files.
<h4>Features</h4>
<ul>
<li>Great user interface: simple and functionally.</li>
<li>Insert code before <code></head></code>, after <code><body></code> or before <code></body></code>.</li>
<li>Items sortable.</li>
<li>Add Google Analytics code.</li>
<li>Add Google Verification meta tag.</li>
<li>Add Google Tag Manager code.</li>
<li>Add Facebook pixel code.</li>
<li>Add custom meta tags.</li>
<li>Add custom JS/CSS/HTML code.</li>
<li>RTL support.</li>
</ul>

LuckyWP Scripts Control

A great way to insert and manage custom code (CSS, JS, meta tags, etc.) into website before </head>, after <body> or before </body>.

FRESHFACE

Create custom CSS and JS codes. Delivered with our awesome Conditional Logic, you can easily specify 
where you want to your custom CSS code appear. You can write your CSS and JS codes inside 
nice ACE editor with syntax highlighter.Codes will be still presented, after you change the theme, 
so this is really good way to write CSS adjustments into your theme.

Custom CSS

Although this plugin does what it's supposed to I don't want to keep clicking the "buy pro version" button because it is the same color and exactly below the standard WordPress update button in the Publish metabox.  Putting it in that spot with that color is deceptive, if your plugin is good and useful people will upgrade to pro naturally, you don't need to trick anyone into clicking - this isn't SEO!

Pro version promotion over the top

Worthless. Just trys to force you to buy the 100 version

Worthless as a free app

No way to add ANY custom code, but there is a huge "upgrade to premium" button.

Add custom CSS, JS, PHP, tracking code. Very easy to use!

LuckyWP Scripts Control vs Custom CSS