Math Captcha for Gravity Forms
A lightweight, server-side math CAPTCHA for Gravity Forms. No JavaScript, no external services, no tracking.
Use with caution
Math Captcha for Gravity Forms works, but test it on a staging site before relying on it in 2026. It runs on 10+ sites and was last updated 3 months ago, and scores 51/100 on our health check.
- Small user base (10+ active installs)
- Very few reviews so far
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Math Captcha for Gravity Fo… stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| captcha | >100 |
| forms | >100 |
| gravity forms | >100 |
| math captcha | #17 |
| spam protection | >100 |
Version adoption
Share of active sites per release.
About Math Captcha for Gravity Forms
From the official readme · v1.0.0Description
Math Captcha for Gravity Forms adds a basic “what is X + Y” challenge to any Gravity Forms form, helping block automated spam submissions without relying on third-party CAPTCHA services, external API calls, or client-side JavaScript.
How it works
- Add three fields to your Gravity Forms form:
- A Number (or Hidden) field with Admin Label
num1 - A Number (or Hidden) field with Admin Label
num2 - A Number field with Admin Label
math_answer, where the visitor types their answer
- A Number (or Hidden) field with Admin Label
- Add an HTML field containing the placeholder
{math_question}wherever you want the question text to appear. - The plugin fills
num1andnum2with random numbers on each page load, replaces{math_question}with the rendered question, and validatesmath_answerserver-side on submit.
The same numbers persist across a failed-validation reload, so the question a visitor sees always matches what’s being validated.
Why server-side?
No JavaScript means no scripts to block, no client-side bypass, and no impact on page-load performance.
This plugin is independently developed and is not affiliated with, endorsed by, or sponsored by Rocketgenius, Inc. or Gravity Forms.
Installation
- Upload the
math-captcha-for-gravity-formsfolder to/wp-content/plugins/, or install directly through the WordPress plugin screen. - Activate the plugin through the ‘Plugins’ screen in WordPress.
- Make sure Gravity Forms is installed and active — this plugin does nothing without it.
- Edit the form(s) you want to protect and add the three fields described above (Admin Labels
num1,num2,math_answer) plus an HTML field containing{math_question}.
Frequently asked questions
Does this work without Gravity Forms?
No. This plugin only adds functionality on top of Gravity Forms and does nothing if Gravity Forms is not installed and active. You’ll see an admin notice if it’s missing.
Does this send any data to external services?
No. All number generation and validation happens entirely server-side, on your own site.
Can I style the question text?
Yes — the question is wrapped in a tag inside your HTML field, so you can wrap it with your own markup/CSS in the HTML field content.
What happens if I don’t add the math_answer field?
The plugin checks for all three fields (num1, num2, math_answer) by Admin Label. If any are missing from a given form, validation is skipped silently for that form, so it won’t break forms that aren’t using the captcha.
Screenshots
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Math Captcha for Gravity Forms alternatives
All captcha plugins →
FAQ
Math Captcha for Gravity Forms: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 2, 2026
Is Math Captcha for Gravity Forms free?
Yes. Math Captcha for Gravity Forms is free to download and use from the official WordPress.org plugin directory.
Is Math Captcha for Gravity Forms safe to use in 2026?
Math Captcha for Gravity Forms works, but test it on a staging site before relying on it in 2026. It runs on 10+ sites and was last updated 3 months ago, and scores 51/100 on our health check.
How many websites use Math Captcha for Gravity Forms?
Math Captcha for Gravity Forms is active on 10+ WordPress websites and has been downloaded 248 times since it launched in July 2026. It was downloaded 77 times in the last 30 days.
Does Math Captcha for Gravity Forms work with WordPress 7.1?
Math Captcha for Gravity Forms is officially tested up to WordPress 7.0.6, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does Math Captcha for Gravity Forms need?
Math Captcha for Gravity Forms requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Math Captcha for Gravity Forms last updated?
The latest version, 1.0.0, was released on July 1, 2026 (3 months ago).
Who makes Math Captcha for Gravity Forms?
Math Captcha for Gravity Forms is developed and maintained by codedbyabir.
What are the best alternatives to Math Captcha for Gravity Forms?
The most popular alternatives to Math Captcha for Gravity Forms are SiteGuard WP Plugin (500K+ installs), CF7 Apps (300K+ installs) and Really Simple CAPTCHA (300K+ installs).
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