Really Simple CAPTCHA vs Captcha Spam Blocker (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Quick Verdict
As of April 2026, Captcha Spam Blocker has a higher user rating (4.5/5 from 2 reviews) while Really Simple CAPTCHA leads in active installations (300K+ vs 50). Both are free WordPress plugins. Really Simple CAPTCHA has accumulated 9.3M+ total downloads while Captcha Spam Blocker has 951.
Detailed Comparison
| Metric | Really Simple CAPTCHA | Captcha Spam Blocker | |
|---|---|---|---|
| Rating | 4.2/5 | ► | 4.5/5 |
| Total Reviews | 129 | ◄ | 2 |
| Active Installs | 300K+ | ◄ | 50 |
| Total Downloads | 9.3M+ | ◄ | 951 |
| Support Resolution | N/A | N/A | |
| Last Updated | 1 year ago | ► | 8 months ago |
| First Released | 2009 | 2024 | |
| Age | 17 years | 2 years | |
| WP Requires | 6.6+ | 4.0+ | |
| PHP Requires | 7.4+ | 5.4+ | |
| Business Model | Free | Free | |
| Latest Version | 2.4 | 3.0.0 |
Rating Breakdown
Really Simple CAPTCHA
Captcha Spam Blocker
Download Trends
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
Captcha Spam Blocker Reviews
No reviews yet
More Plugins Worth Comparing
Top alternatives in the same category as Really Simple CAPTCHA and Captcha Spam Blocker
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
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Are Really Simple CAPTCHA and Captcha Spam Blocker free?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.