Is Logical Captcha free?

Yes, Logical Captcha is free to use. It is available as a free plugin on WordPress.org.

How many websites use Logical Captcha?

Logical Captcha has 10 active installations as tracked by WordPress.org.

What are the best Logical Captcha alternatives?

Popular alternatives to Logical Captcha include Akismet Anti-spam: Spam Protection, Sucuri Security – Auditing, Malware…, WP Mail Logging. You can compare them side-by-side on our comparison pages.

Does Logical Captcha work with the latest WordPress?

Logical Captcha has been tested up to WordPress 2.8.4. It requires WordPress 2.7.1+ and PHP false+.

Logical Captcha — Reviews, Rating & Alternatives (2026)

As of April 2026, Logical Captcha is a WordPress spam plugin with 10 active installations and a 0/5 rating0. It has been downloaded 2.2K+ times in total. Requires WordPress 2.7.1+ and PHP false+. Available on WordPress.org since 2009. Last updated 16 years ago — may have compatibility concerns. Top alternative: Akismet Anti-spam: Spam Protection.

0/5Rating

10active installs

2.2K+total downloads

17 yearssince 2009

Overview

Logical Captcha takes advantage of the TextCaptcha.com service, which provides logic-based textual questions instead of distorted images or audio to validate that the entity registering is a real live human being, and not a spam bot. It will provide protection against false registrations and the dreaded spam comments, etc.

An example of such a question might be:

Question:
Out of a truck, a lion, the color purple, and the number forty-two, which has a door?

Answer:
truck

Textual logic-based captchas mean that your registration process will be accessible to everyone, including visually/hearing impaired visitors who use access technology to surf the web. It requires a free API key from TextCaptcha.com

This plugin was developed by Josh de Lioncourt of the Mac-cessibility Network, a site dedic…

Read full description on WordPress.org