Really Simple Security – Simple and… vs Duo Two-Factor Authentication (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Really Simple Security – Simple and…
3.0M+ active installs
Free
Duo Two-Factor Authentication
3.0K+ active installs
Free
Quick Verdict
As of April 2026, Really Simple Security – Simple and… has a higher user rating (4.9/5 from 8,812 reviews) and leads in active installations (3.0M+ vs 3.0K+). Both are free WordPress plugins. Really Simple Security – Simple and… has accumulated 207M+ total downloads while Duo Two-Factor Authentication has 186K+.
Detailed Comparison
| Metric | Really Simple Security – Simple and… | Duo Two-Factor Authentication | |
|---|---|---|---|
| Rating | 4.9/5 | ◄ | 3.7/5 |
| Total Reviews | 8,812 | ◄ | 39 |
| Active Installs | 3.0M+ | ◄ | 3.0K+ |
| Total Downloads | 207M+ | ◄ | 186K+ |
| Support Resolution | 100% | N/A | |
| Last Updated | 4 days ago | ◄ | 10 months ago |
| First Released | 2015 | 2011 | |
| Age | 11 years | 15 years | |
| WP Requires | 6.6+ | 4.1+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 9.5.9 | 2.5.7 |
Rating Breakdown
Really Simple Security – Simple and…
Duo Two-Factor Authentication
Download Trends
Over the past 30 days, Really Simple Security – Simple and… averaged approximately 55,249 daily downloads while Duo Two-Factor Authentication averaged 34.
Recent Reviews
Really Simple Security – Simple and… Reviews
Simple Yet Effective
Really Simple Security is a great plugin for basic security needs. It’s easy to set up and offers essential protection, but it could use more advanced features for power users. Overall, it’s solid.
Incredibly Good Tool!
It’s a bit tricky, especially when after a long period you have to go back and edit or update, but when I learned to use it years ago it was and is still incredible. It bloody works, giving you total
semplice
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Duo Two-Factor Authentication Reviews
Extra Security
Love having this plugin because it adds an excellent layer of much needed security
Death by bit rot.
This used to be an awesome plugin. It offered seamless integration with Duo, blocking admin access to my site in the case of a password compromise or brute force attack. Sadly, it recently just st
No updates for half a year, no PHP 8. Too bad
Best 2FA addon for WordPress – if it wasn’t so neglected. No updates for half a year, no PHP 8. Too bad. Could have been so great. Now it’s out. This topic was modified 3 years, 3 months ago b
More Two Factor Worth Comparing
Top alternatives in the same category as Really Simple Security – Simple and… and Duo Two-Factor Authentication
Secure WordPress login with Two Factor Authentication - supports WP, Woo + other login forms, HOTP, TOTP (Google Authenticator, Authy, etc.)
Enable one-click login with this WordPress Two-Factor Authentication (2FA) plugin, utilizing email for added security.
Easily add Duo authentication to your WordPress website. Enable multi-factor authentication for your admins and/or users.
Adds an extra layer of security to your Wordpress Account. Same as Google 2-step verification.
WebAuthn authentication provider for Two Factor plugin.
Frequently Asked Questions
Is Really Simple Security – Simple and… or Duo Two-Factor Authentication more popular?
Which has better ratings — Really Simple Security – Simple and… or Duo Two-Factor Authentication?
Are Really Simple Security – Simple and… and Duo Two-Factor Authentication free?
Which plugin has better support — Really Simple Security – Simple and… or Duo Two-Factor Authentication?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.