WordPress plugin comparison
Block Referer Spam vs Invisible Anti-Spam & CAPTCHA
Block Referer Spam
by supersoju
500+ installs3.4
Invisible Anti-Spam & CAPTCHA
by Matthias Nordwig
5K+ installs4.8
At a glance
- Invisible Anti-Spam & CAPTCHA has more active installs: 5K+, against 500+ for Block Referer Spam.
- On a typical day, Invisible Anti-Spam & CAPTCHA is downloaded about 199 times, Block Referer Spam about 11.
- Invisible Anti-Spam & CAPTCHA is rated higher: 4.8 out of 5 from 50 reviews, against 3.4 from 21 reviews.
- Invisible Anti-Spam & CAPTCHA was updated more recently: Nov 4, 2026, against Aug 16, 2026 for Block Referer Spam.
- Invisible Anti-Spam & CAPTCHA is tested with a newer WordPress: 7.1.4, against 7.0.8 for Block Referer Spam.
- Block Referer Spam has been around longer: since 2015, against 2022 for Invisible Anti-Spam & CAPTCHA.
Line by line
Invisible Anti-Spam & CAPTCHA leads on 7 of 7 comparable lines.
| Metric | Block Referer Spam | Invisible Anti-Spam & CAPTCHA |
|---|---|---|
| Popular rank | #8,846 | #3,192 |
| Active installs | 500+ | 5K+ |
| Downloads, last 30 days | 279 | 8.4K |
| Rating | 3.4(21) | 4.8(50) |
| Support threads resolved | – | 83% |
| Tested up to | 7.0.8 | 7.1.4 |
| Search multiplier | ×0.46 | ×1.34 |
| Last release | 2 months ago | 6 days ago |
| Requires PHP | – | 7.1 |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
Tags they share
More comparisons
- Block Referer Spam vs Analytics Spam Blocker
- Block Referer Spam vs Custom Referral Spam Blocker
- Block Referer Spam vs Akismet Anti-spam
- Block Referer Spam vs Anti-Spam, Spam FireWall by CleanTalk
- Invisible Anti-Spam & CAPTCHA vs CF7 Apps
- Invisible Anti-Spam & CAPTCHA vs Gravity Forms Zero Spam
- Invisible Anti-Spam & CAPTCHA vs Friendly Captcha for WordPress
- Invisible Anti-Spam & CAPTCHA vs oopspam Anti-Spam
Is one of these yours?
Track your plugin against its rivals every day: rank, installs, downloads, ratings and their releases, with alerts when anything moves.
Start free