The MemberPress Math CAPTCHA is a lightweight, “set-and-forget” add-on designed specifically to protect your membership site from automated bot registrations and brute-force login attempts. Unlike heavy third-party services like Google reCAPTCHA, it doesn’t require API keys or external tracking, making it a favorite for privacy-conscious developers.
This is EXACTLY the same product as distributed by the developer. Sales Page
Developer: Caseproof, LLC (The makers of MemberPress).
Latest Version: 1.1.10 (as of late 2025).
Compatibility: Requires MemberPress (Basic, Plus, or Pro). It is designed to work seamlessly with WordPress 6.x+ and most responsive themes.
License: GPL (General Public License).
Performance Impact: Near zero. It is a lightweight PHP-based calculation rather than a heavy JavaScript-loaded widget.
Form Integration: Automatically adds a math challenge field to:
MemberPress Registration forms.
MemberPress Login pages.
“Forgot Password” request forms.
Bot Prevention: Blocks automated scripts that cannot solve dynamic arithmetic (e.g., $5 + 12$).
Customization:
Adjustable Difficulty: You can often toggle the complexity of the math problems.
Translation Ready: Fully compatible with localization plugins (like WPML or Loco Translate) to change the “What is…” text.
CSS Styling: The input field can be styled via CSS to match your site’s branding (e.g., modifying the width of the um_math_challenge or standard mepr input classes).
Privacy & GDPR: Does not store user data or track cookies. Since the calculation happens on your server, no data is sent to Google or other third parties.
The plugin is not found in the standard WordPress.org repository; it is a MemberPress Add-on.
Installation: Go to MemberPress > Add-ons within your WordPress dashboard.
Activation: Find “Math CAPTCHA” and click Install Add-on.
Automation: Once activated, it typically enables itself on all MemberPress-generated forms immediately. No further configuration is usually required unless you want to hide it on specific pages using custom hooks.
| Feature | MemberPress Math CAPTCHA | Google reCAPTCHA v3 |
| User Effort | Low (Simple math) | Zero (Invisible) |
| Privacy | High (No tracking) | Low (Data sent to Google) |
| Ease of Setup | Instant (One click) | Medium (API Keys required) |
| Bot Security | Good for basic/spam bots | High for sophisticated attacks |
