Really Simple CAPTCHA vs Cartpauj Register Captcha (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Cartpauj Register Captcha
1.0K+ active installs
Free
Quick Verdict
As of April 2026, Really Simple CAPTCHA has a higher user rating (4.2/5 from 129 reviews) and leads in active installations (300K+ vs 1.0K+). Both are free WordPress plugins. Really Simple CAPTCHA has accumulated 9.3M+ total downloads while Cartpauj Register Captcha has 38K+.
Detailed Comparison
| Metric | Really Simple CAPTCHA | Cartpauj Register Captcha | |
|---|---|---|---|
| Rating | 4.2/5 | 4.2/5 | |
| Total Reviews | 129 | ◄ | 24 |
| Active Installs | 300K+ | ◄ | 1.0K+ |
| Total Downloads | 9.3M+ | ◄ | 38K+ |
| Support Resolution | N/A | N/A | |
| Last Updated | 1 year ago | ► | 10 months ago |
| First Released | 2009 | 2011 | |
| Age | 17 years | 15 years | |
| WP Requires | 6.6+ | 6.0+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 2.4 | 2.0.1 |
Rating Breakdown
Really Simple CAPTCHA
Cartpauj Register Captcha
Download Trends
Over the past 30 days, Really Simple CAPTCHA averaged approximately 406 daily downloads while Cartpauj Register Captcha averaged 4.
Recent Reviews
Really Simple CAPTCHA Reviews
Prima, funktioniert auch auf meiner WP 6.9 einwandfrei
Super simple! Einfach in Contact Form 7 Version 6.1.4 einzubinden. Danke. Meine WordPress Installation: Version 6.9.PHP Version 8.4.15
Bad
I’m sorry to have to give this a bad rating. The amount of spam with Contact Form 7 was enormous. I had to remove it.
Works great with Gravity Forms in 2024!
Nothing but positives. We added this to our Gravity Form in order to obtain the dynamic math captcha. One can create a simple math captcha in GF but not dynamically changing for each form load insof
Cartpauj Register Captcha Reviews
Doesn’t work
I think it used to work, however now it shows the error if you get the captcha wrong, but still registers the user, so it’s useless against spam registrations. I say it used to work, as my site didn’
Nice little plugin
Works as expected.
to jsem hledal!
spam bot registroval 2500 redaktorů 🙁
More Plugins Worth Comparing
Top alternatives in the same category as Really Simple CAPTCHA and Cartpauj Register Captcha
SiteGurad WP Plugin is the plugin specialized for the protection against the attack to the management page and login.
Addons for Contact Form 7 — Honeypot, Database Entries, Redirection, Spam Protection, Webhooks, ACF integration for Contact Form 7, and more.
Blocks spam comments, fake users, contact form spam and more. No impact on SEO. Privacy focused. CAPTCHA free, premium Antispam plugin.
Captcha protection against spam comments & brute force login attacks using Google reCAPTCHA.
Protect your Contact Form 7 forms with Google reCAPTCHA V2, Google reCAPTCHA V3, hCAPTCHA, or Cloudflare Turnstile.
Protect, lockdown & secure login form by limiting login attempts from the same IP & banning IPs.
Frequently Asked Questions
Is Really Simple CAPTCHA or Cartpauj Register Captcha more popular?
Which has better ratings — Really Simple CAPTCHA or Cartpauj Register Captcha?
Are Really Simple CAPTCHA and Cartpauj Register Captcha free?
Which plugin has better support — Really Simple CAPTCHA or Cartpauj Register Captcha?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.