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  7. RMGCaptcha Math Guard – Math CAPTCHA for Login and WooCommerce

RMGCaptcha Math Guard – Math CAPTCHA for Login and WooCommerce

A lightweight math CAPTCHA and spam protection plugin for WordPress login, WooCommerce, and Contact Form 7 forms.

50+ active installs
5.0
(1 ratings)
Free on WordPress.org
View on WordPress.orgSupport forum
Will this break my store?

What the WordPress.org registry says about keeping RMGCaptcha Math Guard – Math CAPTCHA for Login and WooCommerce running.

WordPress compatibility
Tested to 7.1.1
Tested against the WordPress branch in use today.
Last updated
14 days ago
At least 20.7 releases a year since launch. WordPress.org only lists versions still available for download, so the real number may be higher.
Requires PHP
7.4
Your host must be running at least this version.
Requires WordPress
5.8
Contributors
1
A single maintainer. Worth knowing if the plugin is load-bearing for your store.
50+ active installsWordPress.org reports installs in bands, not exact counts.
Maintenance & trust

Scored on how RMGCaptcha Math Guard – Math CAPTCHA for Login and WooCommerce is looked after — not on how many stores run it.

Solid
Not enough public feedback to put a confident number on this one. Little public feedback — score rests mostly on release activity. What we can see is below.
Maintenance
35 / 35
Updated 12 days ago.
WordPress compatibility
20 / 20
Tested to WP 7.1.1 (current).
Support responsiveness
Not enough data
Only 0 support thread(s) — not enough to judge.
Merchant satisfaction
10 / 15
5.0/5 across 1 rating(s).
Listing transparency
3 / 10
Provides: description
1 of 5 measures had too little evidence to score. They are left out of the total rather than counted as zero — otherwise a plugin would be marked down for being small rather than for being poorly kept.Measured 2026-09-20 from the WordPress.org plugin registry.
Ratings

5.0

1 rating
5★1
4★0
3★0
2★0
1★0
Every rating WordPress.org holds for this plugin, not a sample. Written reviews live in the plugin's WordPress.org reviews forum.

RMGCaptcha Math Guard adds a GDPR-friendly, math-based CAPTCHA to protect WordPress login, WooCommerce, and Contact Form 7 forms from spam, fake registrations, and brute-force attacks. No external services, no tracking, and fully WordPress.org compliant.

Features:

  • WordPress login protection (captcha on wp-login.php)
  • Contact Form 7 integration via [pmcMathcaptcha] / [pmcMathcaptcha*]
  • WooCommerce login and registration protection
  • Lightweight spam protection without Google reCAPTCHA or third-party tracking
  • Configurable difficulty and operations (Addition/Subtraction/Multiplication/Random)
  • Hide captcha for logged-in users
  • Custom error message support
  • Optional rate limiting and honeypot
  • Failed login log + logged user list (admin pages)
  • Translation-ready

How do I add it to Contact Form 7?

Use the form tag [pmcMathcaptcha] or [pmcMathcaptcha*] in your CF7 form.

Does it work for logged-in users?

You can hide CAPTCHA for logged-in users via the settings page.

Does it keep logs?

Yes. It provides separate admin pages for Logged User List and Failed Login Log with a clear button for each list.

Categories
Security & spam
Plugin details
Version1.3.1
Last updated2026-09-08 8:10am GMT
Added2026-03-12
Requires WordPress5.8
Tested up to7.1.1
Requires PHP7.4
Tags on WordPress.org
captcha
login security
math captcha
spam protection
woocommerce
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