FlatPM – Ad Manager, AdSense and Custom… vs Custom CSS (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
FlatPM – Ad Manager, AdSense and Custom…
10K+ active installs
Free
Quick Verdict
As of April 2026, FlatPM – Ad Manager, AdSense and Custom… has a higher user rating (4.6/5 from 9 reviews) and leads in active installations (10K+ vs 1.0K+). Both are free WordPress plugins. FlatPM – Ad Manager, AdSense and Custom… has accumulated 183K+ total downloads while Custom CSS has 69K+.
Detailed Comparison
| Metric | FlatPM – Ad Manager, AdSense and Custom… | Custom CSS | |
|---|---|---|---|
| Rating | 4.6/5 | ◄ | 2.5/5 |
| Total Reviews | 9 | ► | 17 |
| Active Installs | 10K+ | ◄ | 1.0K+ |
| Total Downloads | 183K+ | ◄ | 69K+ |
| Support Resolution | N/A | N/A | |
| Last Updated | 2 months ago | ◄ | 8 years ago |
| First Released | 2021 | 2015 | |
| Age | 5 years | 11 years | |
| WP Requires | 5.9+ | 4.0.0+ | |
| PHP Requires | 5.6+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 3.2.3 | 1.4.0 |
Rating Breakdown
FlatPM – Ad Manager, AdSense and Custom…
Custom CSS
Download Trends
Over the past 30 days, FlatPM – Ad Manager, AdSense and Custom… averaged approximately 31 daily downloads while Custom CSS averaged 4.
Recent Reviews
FlatPM – Ad Manager, AdSense and Custom… Reviews
Best plugin for placing ads
I use it to place ads, some short-time promos and even for adding some new features, without changing the whole template. 5 stars for sure.
Божественно!
Очень крутой плагин для монетизации. Как он это делает?
Это лучший плагин для монетизации сайтов
Лучше и функциональнее плагин по монетизации не найти. Столько функционала, сколько есть тут нет ни в одном плагине по монетизации.
Custom CSS Reviews
No way to add ANY custom code, but there is a huge “upgrade to premium” button.
No way to add ANY custom code, but there is a huge “upgrade to premium” button. This topic was modified 9 years, 3 months ago by kolakube.
Worthless as a free app
Worthless. Just trys to force you to buy the 100 version
Dodgy
I am fed up with you inserting spam/advertisements into my WP dashboard for other products you sell. I have deleted the plugin and will tell others not to bother – if you do this kind of dodgy stuff,
More Custom Code Worth Comparing
Top alternatives in the same category as FlatPM – Ad Manager, AdSense and Custom… and Custom CSS
Insert PHP, JavaScript, CSS, HTML, ads, and tracking code into WordPress headers, footers, pages, and content using conditional logic, without editing …
A great way to insert and manage custom code (CSS, JS, meta tags, etc.) into website before </head>, after <body> or before </body>.
Frequently Asked Questions
Is FlatPM – Ad Manager, AdSense and Custom… or Custom CSS more popular?
Which has better ratings — FlatPM – Ad Manager, AdSense and Custom… or Custom CSS?
Are FlatPM – Ad Manager, AdSense and Custom… and Custom CSS free?
Which plugin has better support — FlatPM – Ad Manager, AdSense and Custom… or Custom CSS?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.