Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) vs Sublium Subscriptions – Subscriptions for WooCommerce – Recurring Payments, Subscription Plans & Installments

Easily improve site security with WordPress Hardening, Two-Factor Authentication (2FA), Login Protection, Vulnerability Detection and SSL certificate. Really simple, Effective and Performant WordPress Security Really Simple Security is the most lightweight and easy-to-use security plugin for WordPress. It secures your WordPress website with SSL certificate generation, including proper 301 https redirection and SSL enforcement, scanning for possible vulnerabilities, Login Protection and implementing essential WordPress hardening features. We believe that security should have the absolute minimum effect on website performance, user experience and maintainability. Therefore, Really Simple Security is: Lightweight: Every security feature is developed with a modular approach and with performance in mind. Disabled features won’t load any redundant code. Easy-to-use: 1-minute configuration with short onboarding setup. Security Features Easy SSL Migration Migrates your website to HTTPS and enforces SSL in just one click. 301 redirect via PHP or .htaccess Secure cookies Let’s Encrypt: Install an SSL Certificate if your hosting provider supports manual installation. Server Health Check: Your server configuration is every bit as important for your website security. WordPress Hardening Tweak your configuration and keep WordPress fortified and safe by tackling potential weaknesses. Prevent code execution in the uploads folder Prevent login feedback and disable user enumeration Disable XML-RPC Disable directory browsing Username restrictions (block ‘admin’ and public names) and much more.. Vulnerability Detection Get notified when plugins, themes or WP core contain vulnerabilities and need appropriate action. Login Protection Allow or enforce Two-Factor Authentication (2FA) for specific user roles. Users receive a two-factor code via Email. Improve Security with Really Simple Security Pro Protect your site with all essential security features by upgrading to Really Simple Security Pro. Advanced SSL enforcement Mixed Content Scan & Fixer. Detect files that are requested over HTTP and fix them to HTTPS, both Front- and Back-end. Enable HTTP Strict Transport Security and configure your site for the HSTS Preload list. Firewall Really Simple Security Pro includes a performant and efficient WordPress firewall, to stop bots, crawlers and bad actors with IP and username blocks. 404 blocking – Blocks crawlers as they trigger unusual numbers of 404 errors. Region blocking – Only allow/block access to your site from specific regions. Automated and customisable Firewall rules. IP blocklist and allowlist. Security Headers Security headers protect your site visitors against the risk of clickjacking, cross-site-forgery attacks, stealing login credentials and malware. Independent of your Server Configuration, works on Apache, LiteSpeed, NGINX, etc. Protect your website visitors with X-XSS Protection, X-Content-Type-Options, X-Frame-Options, a Referrer Policy and CORS headers. Automatically generate your WordPress-tailored Content Security Policy. Vulnerability Measures When a vulnerability is detected in a plugin, theme or WordPress core you will get notified accordingly. With Vulnerability Measures, you can configure simple but effective measures to make sure that a critical vulnerability won’t remain unattended. Force update: An update process will be tried multiple times until it can be assumed development of a theme or plugin is abandoned. You will be notified during these steps. Quarantine: When a plugin or theme can’t be updated to solve a vulnerability, Really Simple Security can quarantine the plugin. Advanced Site Hardening Choose a custom login URL Automated File Permissions check and fixer Rename and randomize your database prefix Change the debug.log file location to a non-public folder Disable application passwords Control admin creation Disable HTTP methods, reducing HTTP requests Login Protection Secure your website’s login process and user accounts with powerful security measures. Two-Step verification (Email login) 2FA (two factor authentication) with TOTP Passwordless login with passkey login Enforce strong passwords and frequent password change Limit Login Attempts With Limit Login Attempts you can configure a threshold to temporarily or permanently block IP addresses or (non-existing) usernames. You can also throw a CAPTCHA after a failed login (hCaptcha or Google reCaptcha) Access Control Restrict access to your site for specific regions. Add specific IP addresses or IP ranges to the Blocklist or Allowlist. Useful Links Documentation Security Definitions Translate Really Simple Security Issues & pull requests Feature requests Love Really Simple Security? If you want to support the continuing development of this plugin, please consider buying Really Simple Security Pro, which includes some excellent security features and premium support. About Really Simple Plugins Our mission is to make complex WordPress requirements really easy. Really Simple Security is developed by Really Simple Plugins. For generating SSL certificates, Really Simple Security uses the le acme2 PHP Let’s Encrypt client library, thanks to ‘fbett’ for providing it. Vulnerability Detection uses WP Vulnerability, an open-source initiative by Javier Casares. Want to join as a collaborator? We’re on GitHub as well!

Sublium Subscriptions is a WooCommerce subscriptions plugin that helps you sell recurring products, memberships, service plans, and installment payments. Create subscription products, automate renewals, collect recurring payments, reduce churn, and let customers manage their own plans. Built for store owners, marketers, and growing brands, Sublium Subscriptions combines subscription billing, failed payment recovery, cancellation prevention, customer self-service, and subscription analytics in one WooCommerce solution. Instead of stitching together multiple tools, use one subscription system to launch, manage, and grow recurring revenue in WooCommerce. Sublium Subscriptions includes built-in retention tools that help you keep subscribers longer with pause and skip options, smart cancellation flows, automated payment recovery, and customer self-service. Sublium Subscriptions Pro Sublium Subscriptions Pro adds zero additional transaction fees, advanced retention workflows, a built-in analytics dashboard, smart cancellation flows, a one-click card updater, upgrade groups, and a visual email builder. Get Sublium Subscriptions Pro now. Watch this video to learn why WooCommerce store owners, marketers, developers, and subscription businesses choose Sublium Subscriptions: What You Can Do With Sublium Subscriptions Create WooCommerce subscription products in minutes Offer recurring payments and automatic renewals Launch installment payment plans for high-ticket products Sell physical products, digital memberships, and service subscriptions Let customers pause, skip, reschedule, or restart plans Recover failed payments automatically Track subscriber growth, MRR, ARR, churn, and renewal performance WooCommerce Subscription Features Create simple and variable subscription products Support recurring billing and automatic renewals Offer free trials and one-time signup fees Manage fixed-term and evergreen subscriptions Handle upgrades, downgrades, and proration Provide customer self-service inside WooCommerce Recover failed renewals automatically Track subscription analytics and subscriber growth Create installment plans and scheduled payment products See Sublium Subscriptions in Action Why Store Owners Choose Sublium for WooCommerce Subscriptions Most WooCommerce subscription plugins stop at billing. Sublium Subscriptions goes further with built-in retention, failed payment recovery, customer self-service, and revenue tracking. 5-Minute Setup Wizard Launch your first subscription product in minutes with a guided setup wizard. No complicated configuration required. Easy Subscription Management If you can create a standard WooCommerce product, you can create and manage subscriptions with Sublium Subscriptions. Flexible Subscription Models Support physical subscribe-and-save products, digital memberships, service retainers, and installment payment plans. Failed Payment Recovery for Recurring Orders Automatically retry failed payments with intelligent scheduling. Send card expiry reminders and let customers update cards with one secure link. Churn Reduction Tools Let subscribers pause, skip, reschedule, or restart plans. Use cancellation flows, surveys, and retention offers to reduce churn. Customer Self-Service Portal Reduce support tickets by letting subscribers manage their own subscriptions, shipping details, renewals, and payment methods. Subscription Analytics Dashboard Track MRR, ARR, churn, subscriber trends, cohort performance, renewal performance, and revenue forecasts from one dashboard. Upgrade and Downgrade Offers Create plan hierarchies, offer upgrade incentives, handle proration automatically, and trigger upgrade prompts at the right time. One-Click Card Updater Recover revenue lost to expired cards with secure one-time update links. Customers can update payment methods without logging in. Visual Email Builder Design professional subscription emails with a drag-and-drop builder and dynamic merge tags. Subscription Features for Physical Products, Memberships, and Installments Subscribe and Save for Physical Products Offer automatic deliveries for consumables, flexible delivery cycles, subscriber discounts, and renewal-based forecasting. Recurring Digital Subscriptions Automate billing for memberships, courses, and services. Restrict premium access behind recurring payments and revoke access automatically when payments fail. Installment Payment Plans Split high-ticket purchases into weekly or monthly payments. Collect upfront down payments, allow early payoff, and reduce cart abandonment. Flexible Billing Options Set custom billing intervals such as daily, weekly, monthly, or yearly, and define fixed-term or evergreen subscriptions. Free Trials Offer free trial periods with control over trial length, billing start date, and post-trial renewals. One-Time Signup Fees Charge a one-time setup or onboarding fee in addition to recurring subscription payments. Advanced Subscription Coupons Create recurring percentage or fixed discounts, usage limits, expiry dates, and promotion-based subscription offers. Payment Gateway Support Accept payments via Stripe for automatic renewals, Square, PayPal, major credit and debit cards, Apple Pay, and Google Pay with secure tokenization. Automated Email Notifications Send welcome emails, renewal receipts, failed renewal alerts, cancellation confirmations, installment notifications, and admin alerts for key events. Smart Cancellation Flows Present benefit reminders before cancellation, collect feedback, show retention offers, and display final win-back options. Activity Logs Track subscription events, renewal processing, event triggers, timestamps, filtering, and CSV exports for audits and troubleshooting. Lightweight Performance Sublium Subscriptions is built to stay efficient for WooCommerce stores while handling recurring billing workflows. Auto-Calculated Proration Automatically calculate fair billing adjustments when customers upgrade or downgrade mid-cycle. Unlimited Subscription Growth Create unlimited subscriptions, accept unlimited subscribers, and scale recurring revenue without artificial limits. Ideal Use Cases for Sublium Subscriptions Sublium Subscriptions works well for stores and businesses selling: Subscribe and save products Monthly product boxes Digital memberships Online courses with recurring billing Coaching and service retainers Refill and replenishment products Installment plans for expensive products Ongoing maintenance or support plans Recurring wellness or lifestyle products Switching to Sublium Subscriptions Sublium Subscriptions is built for WooCommerce store owners who want a simpler subscription setup with recurring billing, retention tools, failed payment recovery, and analytics in one place. It is a strong fit for businesses that want: Fewer moving parts in their subscription stack Better customer self-service Stronger renewal recovery Better churn reduction workflows Installment payment support Clear recurring revenue reporting Integrations FunnelKit Funnel Builder: Sell subscriptions through high-converting checkout pages and sales funnels, and offer recurring products as one-click upsells or order bumps. FunnelKit Automations: Run marketing workflows based on subscription data, automatically tag subscribers, trigger welcome sequences, and launch cart recovery campaigns. LearnDash: Link subscriptions to LMS content, auto-enroll students, and revoke access when payments fail. TutorLMS: Connect course access to recurring billing. MemberPress: Use Sublium Subscriptions for billing while MemberPress manages content protection. WooCommerce Memberships: Automatically grant membership status when a subscription is purchased. AffiliateWP: Reward affiliates for renewals and automatically track recurring commissions. WPML: Fully compatible with WPML for multilingual WooCommerce subscription stores. Sublium Subscriptions Lite vs Pro Comparison What You Get With Sublium Subscriptions Lite With Sublium Subscriptions Lite, you can create WooCommerce subscriptions, recurring payments, installment plans, variable subscription products, free trials, signup fees, and automated renewal flows. What You Get With Sublium Subscriptions Pro With Sublium Subscriptions Pro, you unlock advanced retention workflows, cancellation prevention, one-click card updates, deeper analytics, advanced email tools, and zero additional transaction fees. Included in Sublium Subscriptions Lite (Free Forever) Core Subscription Features Unlimited subscriptions and subscribers Subscribe and save for physical products Recurring digital memberships and services Installment payment plans Variable subscription products Free trial periods One-time signup fees Flexible billing intervals Fixed-term and evergreen subscriptions Payment Recovery Automatic payment retry Customizable retry intervals Prorated billing for upgrades and downgrades Basic Customer Self-Service Portal Renew subscriptions early Trigger instant subscribe-and-save renewals Pay off remaining installments View subscription history View addresses and payment methods See upcoming payment dates and amounts Email Notifications Subscription created emails Renewal receipt emails Failed renewal alert emails Cancellation confirmation emails Installment notification emails Admin alert emails Basic email customization via rich text editor Payment Gateways Stripe with automatic recurring payments Square Major credit and debit cards Apple Pay and Google Pay Secure tokenization Subscription Management Unified subscription dashboard Real-time status tracking Upcoming payment visibility Quick customer search Pause, cancel, or reschedule subscriptions Full activity timeline Customer Value Tracking Centralized subscriber data VIP customer identification by revenue Active vs inactive subscriber tracking Renewal success monitoring Active subscription visibility per customer Cash flow forecasting using upcoming payments Integrations FunnelKit Funnel Builder FunnelKit Automations LearnDash TutorLMS MemberPress WooCommerce Memberships AffiliateWP Security and Compliance PCI-compliant payment processing GDPR best practices Data export and deletion support Upgrade to Sublium Subscriptions Pro to remove additional costs. Unique Features of Sublium Subscriptions Pro Advanced Retention Tools Smart cancellation flows with surveys Automated win-back offers One-click secure card updater Enhanced self-service portal with pause, skip, and reschedule Retention offer triggers Proactive card expiry alerts Visual Email Builder Drag-and-drop email designer Merge tags for personalization Mobile-optimized templates Advanced email triggers Upgrade confirmation emails Branding controls Built-In Analytics Dashboard MRR tracking ARR tracking Churn monitoring Subscriber growth analysis Cohort analysis Revenue forecasting Cancellation flow effectiveness Upgrade group performance CSV export New vs renewal revenue comparison Visual graphs and charts Date-range filtering Upgrade Groups Tier hierarchies Upgrade incentives Automatic proration handling Advanced display conditions Intelligent upgrade prompts Upgrade performance tracking CSV export Advanced Activity Logs Track subscription events Monitor renewal processing Identify triggers such as customer, admin, or system actions Review timestamps and detailed logs Filter by subscription, customer, or event Export logs for external auditing Enhanced Payment Recovery Failed payment email alerts Card expiry warning emails Secure card update links Custom card updater page with shortcode support Branded card update experience Last retry urgency notifications Renewal reminder emails Priority Support Fast response times Direct access to senior support engineers Screenshare troubleshooting sessions View all premium features and pricing. Who Should Use Sublium Subscriptions for Recurring Payments Sublium Subscriptions is a strong fit for: Health and wellness brands Food and beverage businesses Subscription box businesses Course creators Coaches and trainers Membership communities Digital agencies High-ticket retailers Software companies Non-profits Any WooCommerce business looking to turn one-time buyers into recurring customers Why the Sublium Brand Sublium is the brand created by the team behind FunnelKit, trusted by 40,000+ WooCommerce businesses. As a former agency building custom WooCommerce and WordPress solutions, we saw how fragmented subscription management had become. Store owners were juggling multiple plugins, facing conflicts, incurring high costs, and delivering poor customer experiences just to run recurring billing. We built Sublium Subscriptions to combine subscriptions, recurring billing, retention, and analytics in one WooCommerce solution without unnecessary complexity. Ready to grow recurring revenue? Download Sublium Subscriptions Lite: Launch your first subscription quickly Upgrade to Sublium Subscriptions Pro: Unlock zero additional transaction fees and advanced subscription features Support For support, feature requests, or bug reports, please visit: https://sublium.com/support Development Sublium Subscriptions is built with modern development practices: Object-oriented PHP architecture React-based admin interface WordPress coding standards compliance REST API design Comprehensive error handling and logging Source code: https://github.com/xlplugins/sublium-subscriptions Credits Developed by FunnelKit Website: https://funnelkit.com License Sublium Subscriptions for WooCommerce is licensed under the GPLv3 or later. Privacy Policy Sublium Subscriptions collects subscription and order data to provide subscription management functionality. No personal data is transmitted to third-party servers except through configured payment gateways for transaction processing.