Description
Math Verification addon adds simple math questions to the registration form of Restrict Content Pro, requiring the visitor to solve a basic operation before completing registration. Designed for those who maintain paid or free membership areas and face a constant flow of automated sign-ups, it acts as a discreet anti-spam layer without relying on external services like reCAPTCHA or compromising the human user experience.
Main Features of Math Verification
- Mathematical verification field
Inserts a simple arithmetic operation into the Restrict Content Pro registration form. - Validation on submission
Blocks account creation when the calculation answer does not match the expected result. - Native integration with RCP
Fits into forms generated by Restrict Content Pro without requiring template reconfiguration. - Alternative to external CAPTCHA
Eliminates the need for third-party services like Google’s reCAPTCHA and keeps registration self-contained on the site. - Direct configuration
Enables protection via the base plugin panel without code or template editing.
Benefits of Math Verification
- Fewer automated sign-ups
Reduces bot entries in member lists, keeping the base clean and reliable. - Privacy preserved
Prevents sending visitor data to external anti-spam verification services. - Quick implementation
Adds registration protection in just a few clicks without altering the form flow. - Smooth human experience
Replaces tiring visual challenges with a simple math problem, easy for anyone to solve.
Who Is Math Verification For?
- Those who maintain membership areas in Restrict Content Pro and frequently receive fake registrations.
- Subscription sites preferring not to depend on reCAPTCHA or any external validation service.
- Those wanting a light, discreet anti-spam layer on the registration form without complicating the user journey.
How to Download Math Verification
Math Verification is available for download here on Ultrapack. After saving the .zip file, go to Plugins > Add New > Upload Plugin, select the file, and activate the addon. With Restrict Content Pro already running, the math verification option will appear in the base plugin settings.
As a module focused on registration protection, Math Verification occupies a well-defined space in the Restrict Content Pro ecosystem: blocking automated registrations without introducing noticeable friction for legitimate users. It is the natural choice for those seeking a simple defense, independent of external APIs, on restricted content sites, paid communities, and subscription portals.
Frequently asked questions
Is Restrict Content Pro Math Verification GPL-licensed?
Yes. Restrict Content Pro Math Verification is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.
Can I use Restrict Content Pro Math Verification on multiple sites?
Yes. You can use Restrict Content Pro Math Verification on multiple sites. The number of sites connected to Ultrapack Auto Updater is limited by your plan.
How much does Restrict Content Pro Math Verification cost at Ultrapack?
Restrict Content Pro Math Verification costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).
Does Restrict Content Pro Math Verification include updates?
Yes. The current version of Restrict Content Pro Math Verification is 1.0.5, published at Ultrapack on Jan 23, 2021. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).
Is Restrict Content Pro Math Verification scanned before publication?
Yes. Every version of Restrict Content Pro Math Verification goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.
How to install
Automatic updates: this item is updated by the Ultrapack Auto Updater. With it installed, the new version shows up in your dashboard like any other WordPress update (how to set it up).
This item is an add-on for the Kadence Memberships Pro (ex Restrict Content Pro) plugin. Installed on its own it throws no error, but it does not work either.
- Install and activate the Kadence Memberships Pro (ex Restrict Content Pro) plugin before this one.
- Download the file
rcp-math-verification.zip. - In the WordPress dashboard, go to Plugins > Add New > Upload Plugin.
- Select the file
rcp-math-verification.zip, click Install Now and then Activate.
- Both stay active at the same time. Deactivating the Kadence Memberships Pro (ex Restrict Content Pro) plugin turns this add-on off with it.
- An add-on settings usually show up inside the main plugin screens, not in a menu of their own. If you find nothing new in the dashboard after activating, look there before opening a ticket.
Stuck on a step? Open a ticket telling us which one you stopped at.

UAU Ready