Advanced iFrame vs UseStrict's Calendly Embedder (2026)

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

Advanced iFrame

Advanced iFrame

4.3(55)

40K+ active installs

Free

Updated 1 month ago
View Advanced iFrame
VS
UseStrict's Calendly Embedder

UseStrict's Calendly Embedder

5(3)

2.0K+ active installs

Free

Updated 4 months ago
View UseStrict's Calendly Embedder

Quick Verdict

As of April 2026, UseStrict's Calendly Embedder has a higher user rating (5/5 from 3 reviews) while Advanced iFrame leads in active installations (40K+ vs 2.0K+). Both are free WordPress plugins. Advanced iFrame has accumulated 2.4M+ total downloads while UseStrict's Calendly Embedder has 25K+.

Detailed Comparison

Rating
4.3/5Advanced iFrame
UseStrict's Calendly Embedder5/5
Total Reviews
55Advanced iFrame
UseStrict's Calendly Embedder3
Active Installs
40K+Advanced iFrame
UseStrict's Calendly Embedder2.0K+
Total Downloads
2.4M+Advanced iFrame
UseStrict's Calendly Embedder25K+
Support Resolution
100%Advanced iFrame
UseStrict's Calendly EmbedderN/A
Last Updated
1 month agoAdvanced iFrame
UseStrict's Calendly Embedder4 months ago
First Released
2011Advanced iFrame
UseStrict's Calendly Embedder2021
Age
15 yearsAdvanced iFrame
UseStrict's Calendly Embedder5 years
WP Requires
5.5+Advanced iFrame
UseStrict's Calendly Embedder4.5+
PHP Requires
7.4+Advanced iFrame
UseStrict's Calendly Embedder7.4+
Business Model
FreeAdvanced iFrame
UseStrict's Calendly EmbedderFree
Latest Version
2026.0Advanced iFrame
UseStrict's Calendly Embedder1.2

Rating Breakdown

Advanced iFrame

4.3/5(55 reviews)
5
82%
4
2%
3
0%
2
2%
1
15%

UseStrict's Calendly Embedder

5/5(3 reviews)
5
100%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

Advanced iFrame Reviews

by Toine Rademacher

Horrible, invasive, clunky

What a horrible, clunky, and invasive plugin. Every wp-admin page refresh I get an admin notice that takes up half my screen and after a few seconds gets smaller with a weird animation. To get this no

Just what we needed

Fast to install and grasp. Feature rich = future proof. We’re happy.

by Don Brady

Excellent and can’t do without

Used extensively with other apps in domain without hiccup. Been using for years and will continue to do so.

UseStrict's Calendly Embedder Reviews

by antlavant

Fantastic little plugin

Was having real issues getting Calendly to populate from query strings until I used this! Great plugin.

by Michelle Frechette

Simple to Use and Works Perfectly

I wanted to install Calendly on my podcast site for approved guests to be able to book a time. I didn’t want them to have to click a link to open a tab into my calendar. After trying a few different m

by amberexactly

Simple and works great!

Thank you, made it very easy to embed the Calendly calendar.

Frequently Asked Questions

Is Advanced iFrame or UseStrict's Calendly Embedder more popular?
Advanced iFrame has 40K+ active installations while UseStrict's Calendly Embedder has 2.0K+. Advanced iFrame is the more widely-used plugin as of April 2026.
Which has better ratings — Advanced iFrame or UseStrict's Calendly Embedder?
Advanced iFrame has a 4.3/5 rating from 55 reviews, while UseStrict's Calendly Embedder has a 5/5 rating from 3 reviews.
Are Advanced iFrame and UseStrict's Calendly Embedder free?
Advanced iFrame is free and UseStrict's Calendly Embedder is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Advanced iFrame or UseStrict's Calendly Embedder?
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?
Advanced iFrame was last updated 1 month ago and UseStrict's Calendly Embedder was last updated 4 months ago.

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