Yes, Air Horn is free to use. It is available as a free plugin on WordPress.org.

How many websites use Air Horn?

Air Horn has 10 active installations as tracked by WordPress.org.

What are the best Air Horn alternatives?

Popular alternatives to Air Horn include WP API, AIR Badge, Air Quality Data from Foobot. You can compare them side-by-side on our comparison pages.

Does Air Horn work with the latest WordPress?

Air Horn has been tested up to WordPress 4.1.0. It requires WordPress 3.0.1+ and PHP false+.

Air Horn — Reviews, Rating & Alternatives (2026)

Name: Air Horn
Rating: 5 (2 reviews)
Author: Jason Stallings

As of April 2026, Air Horn is a WordPress AIR plugin with 10 active installations and a 5/5 rating from 2 reviews. It has been downloaded 2.2K+ times in total. Requires WordPress 3.0.1+ and PHP false+. Available on WordPress.org since 2015. Last updated 11 years ago — may have compatibility concerns. Top alternative: WP API.