Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms
v6.3.1by Matthias Nordwig · updated 4 days ago
Invisible spam protection for every form, login and checkout. No puzzles, no checkboxes, no lost visitors — a CAPTCHA your users never see.
- Rank
- #3,199
- Up4 vs yesterday
- Active installs (est.)
- ≈ 5,100
- 5K+ reported · High
- Total downloads
- 94.5K
- 94,477 all-time
- Rating
- 4.8/5
- 50 reviews
- Support resolved
- 83%
- 5 of 6 threads, last 2 months
Invisible Anti-Spam & CAPTCHA at a glance
Invisible Anti-Spam & CAPTCHA is a WordPress plugin by Matthias Nordwig with 5K+ active installs, the #3,199 most popular plugin on WordPress.org. On a typical day it’s downloaded about 171 times, 54% more than the month before. It’s rated 4.8 out of 5 from 50 reviews. Version 6.3.1 came out on Nov 4, 2026 and is tested up to WordPress 7.1.4. Among the 136 plugins tagged “spam protection”, it ranks #14. It was first released in 2022.
Chart time range
Applies to every chart below. History from Oct 9, 2026, 31 days.
Downloads over time
Download stats10.4K downloads · the last 30 days
View as table
| Date | Invisible Anti-Spam & CAPTCHA |
|---|---|
| Nov 7, 2026 | 124 |
| Nov 6, 2026 | 275 |
| Nov 5, 2026 | 2,027 |
| Nov 4, 2026 | 357 |
| Nov 3, 2026 | 180 |
| Nov 2, 2026 | 274 |
| Nov 1, 2026 | 128 |
| Oct 31, 2026 | 161 |
| Oct 30, 2026 | 2,024 |
| Oct 29, 2026 | 332 |
| Oct 28, 2026 | 153 |
| Oct 27, 2026 | 85 |
| Oct 26, 2026 | 119 |
| Oct 25, 2026 | 77 |
| Oct 24, 2026 | 64 |
| Oct 23, 2026 | 156 |
| Oct 22, 2026 | 247 |
| Oct 21, 2026 | 184 |
| Oct 20, 2026 | 131 |
| Oct 19, 2026 | 137 |
| Oct 18, 2026 | 66 |
| Oct 17, 2026 | 56 |
| Oct 16, 2026 | 99 |
| Oct 15, 2026 | 120 |
| Oct 14, 2026 | 145 |
| Oct 13, 2026 | 162 |
| Oct 12, 2026 | 274 |
| Oct 11, 2026 | 146 |
| Oct 10, 2026 | 1,418 |
| Oct 9, 2026 | 636 |
Unusual spikes are usually updates, not new installs.
Estimated installs
≈ 5,101 · +8.2% in the last 30 days
View as table
| Date | Estimated installs |
|---|---|
| Nov 8, 2026 | 5,101 |
| Nov 7, 2026 | 5,088 |
| Nov 5, 2026 | 5,070 |
| Nov 4, 2026 | 5,052 |
| Nov 3, 2026 | 5,037 |
| Nov 2, 2026 | 5,034 |
| Nov 1, 2026 | 4,708 |
| Oct 31, 2026 | 4,713 |
| Oct 30, 2026 | 4,710 |
| Oct 29, 2026 | 4,699 |
| Oct 28, 2026 | 4,686 |
| Oct 27, 2026 | 4,714 |
Rank over time
#3,199 · up 70 in the last 30 days
View as table
| Date | Daily snapshot |
|---|---|
| Nov 8, 2026 | #3,199 |
| Nov 7, 2026 | #3,203 |
| Nov 6, 2026 | #3,200 |
| Nov 5, 2026 | #3,201 |
| Nov 4, 2026 | #3,210 |
| Nov 3, 2026 | #3,219 |
| Nov 2, 2026 | #3,207 |
| Nov 1, 2026 | #3,213 |
| Oct 31, 2026 | #3,225 |
| Oct 30, 2026 | #3,231 |
| Oct 29, 2026 | #3,236 |
| Oct 28, 2026 | #3,249 |
| Oct 27, 2026 | #3,247 |
| Oct 16, 2026 | #3,269 |
Growth %
Average +0.66% a day in the last 30 days
View as table
| Date | Growth |
|---|---|
| Nov 8, 2026 | +0.26% |
| Nov 7, 2026 | +0.18% |
| Nov 5, 2026 | +0.36% |
| Nov 4, 2026 | +0.30% |
| Nov 3, 2026 | +0.06% |
| Nov 2, 2026 | +6.92% |
| Nov 1, 2026 | -0.11% |
| Oct 31, 2026 | +0.06% |
| Oct 30, 2026 | +0.23% |
| Oct 29, 2026 | +0.28% |
| Oct 28, 2026 | -0.59% |
Active installs band
5K+ on WordPress.org
View as table
| Date | Daily snapshot |
|---|---|
| Nov 8, 2026 | 5K+ |
| Nov 7, 2026 | 5K+ |
| Nov 6, 2026 | 5K+ |
| Nov 5, 2026 | 5K+ |
| Nov 4, 2026 | 5K+ |
| Nov 3, 2026 | 5K+ |
| Nov 2, 2026 | 5K+ |
| Nov 1, 2026 | 4K+ |
| Oct 31, 2026 | 4K+ |
| Oct 30, 2026 | 4K+ |
| Oct 29, 2026 | 4K+ |
| Oct 28, 2026 | 4K+ |
| Oct 27, 2026 | 4K+ |
| Oct 16, 2026 | 4K+ |
Search rankings
Where it appears in WordPress.org search for the searches you track, checked every day.
See where Invisible Anti-Spam & CAPTCHA ranks in search
Track this plugin to check its position for the searches you choose, daily, with an alert when it moves.
Change log
From our daily snapshot of WordPress.org- So far:Rank #3210 → #3199
- Released 6.3.1 (was 6.3.0)
- Rank #3236 → #3200Downloads +81.6%Installs 4K+ → 5K+
- Released 6.3.0 (was 6.2.0)
- Rank #3249 → #3201Downloads +129.3%Installs 4K+ → 5K+
- Tested up to 7.1.3 → 7.1.4
Versions in use
Share of active installs on each published version, from WordPress.org.
- v6.343%
- v4.116%
- v6.216%
- v6.07.2%
- Other18%
Rating trend
4.8★★★★★50 reviews · steady in the last 30 days
Requirements & info
Version history- Version
- 6.3.1
- Requires WordPress
- 4.8
- Tested up to
- 7.1.4
- Requires PHP
- 7.1
- First released
- Nov 17, 2022
- Last updated
- Nov 4, 2026
- Releases, last 12 months
- …
Questions about Invisible Anti-Spam & CAPTCHA
How many websites use Invisible Anti-Spam & CAPTCHA?
Invisible Anti-Spam & CAPTCHA is active on 5K+ WordPress sites, as WordPress.org reports it. WordPress.org rounds the number down, so the real count is somewhat higher. That makes it the #3,199 most popular plugin on WordPress.org.
How many times has Invisible Anti-Spam & CAPTCHA been downloaded?
94,477 times in total since 2022. On a typical day it’s downloaded about 171 times. See download stats
When was Invisible Anti-Spam & CAPTCHA last updated?
Version 6.3.1 came out on Nov 4, 2026 (4 days ago). See every release
Is Invisible Anti-Spam & CAPTCHA compatible with the latest WordPress?
Yes. It’s tested up to WordPress 7.1.4, the current version.
Does Invisible Anti-Spam & CAPTCHA have known security vulnerabilities?
None that affect the current version. WPVulnerability’s database lists 5 older issues, fixed in earlier versions, so keep Invisible Anti-Spam & CAPTCHA up to date. See its security record
Is Invisible Anti-Spam & CAPTCHA still maintained?
Yes. Its last release was 4 days ago. Its authors resolved 5 of the 6 support threads opened in the last two months.
What rating does Invisible Anti-Spam & CAPTCHA have?
4.8 out of 5 from 50 reviews on WordPress.org. 96% of them give 5 stars.
What are the best alternatives to Invisible Anti-Spam & CAPTCHA?
The plugins most like Invisible Anti-Spam & CAPTCHA, by the tags they share, are CF7 Apps (300K+), Gravity Forms Zero Spam (100K+) and Friendly Captcha for WordPress (10K+). Compare all alternatives
Latest reviews
Analyze reviewsReview stats
4.8
★★★★★
50 reviews
- 5 stars: 48 reviews, 96%
- 4 stars: 0 reviews, 0%
- 3 stars: 0 reviews, 0%
- 2 stars: 0 reviews, 0%
- 1 stars: 2 reviews, 4%
- Positive
- 96%4–5★
- Mixed
- 0%3★
- Critical
- 4%1–2★
- About 4 more 5★ reviews would lift it to 4.9.
- Each new 1★ review takes 24 five-star reviews to balance out.
Compare with competitors
Add up to 1 competitor. No account needed.
| Metric | |
|---|---|
| Estimated installs | ≈ 5,100 |
| Reported installs | 5K+ |
| Rating | 4.8 |
| Reviews | 50 |
| Total downloads | 94.5K |
| Author | Matthias Nordwig |
| First released | Nov 17, 2022 |
| Version | 6.3.1 |
| Requires WP | 4.8 |
| Requires PHP | 7.1 |
| Last updated | Nov 4, 2026 |
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Side by side:Invisible Anti-Spam & CAPTCHA vs CF7 AppsInvisible Anti-Spam & CAPTCHA vs Gravity Forms Zero SpamInvisible Anti-Spam & CAPTCHA vs Friendly Captcha for WordPress