Koalendar – Easy Appointment Scheduling & Booking Plugin vs NetterTech Events

Koalendar is a WordPress booking and appointment scheduling plugin that lets visitors book meetings, services, and appointments directly from your website. It removes the back and forth emails and manual coordination by syncing bookings automatically with your calendar. Built for WordPress users, Koalendar is easy to install, simple to configure, and works out of the box for individuals and small teams. It keeps availability up to date, prevents double bookings, and helps you turn any WordPress site into a complete online booking system in just minutes, with a Free Forever plan to get started. See Koalendar in action Watch how easy it is to set up and start accepting bookings on your WordPress website: Top Features WordPress booking and appointment scheduling plugin Unlimited booking pages and appointments Calendar sync with Google Calendar, Outlook, and iCloud Accept online payments for services and appointments Personalized booking pages that match your website design Multiple appointment types with custom durations Group bookings and classes with attendee limits Smart availability rules, buffers, and time off Team scheduling with shared and round robin availability Automated booking confirmations and reminders Easy embedding using WordPress blocks, shortcodes, or widgets Perfect for Koalendar is designed for small businesses, professionals, and teams who need a reliable scheduling system: Consultants and freelancers Coaches, tutors, and educators Agencies and remote teams Service based businesses Sales teams booking meetings and demos Anyone who needs an online scheduling calendar on their WordPress website Integrations Koalendar integrates seamlessly with the tools you already use, so your online booking system, calendar, and business workflows stay perfectly aligned. This allows you to manage appointments, meetings, and services without manual updates or double bookings. Calendar integrations with Google Calendar, Outlook, and iCloud to keep availability accurate in real time Video meeting integrations with Google Meet and Microsoft Teams, automatically generating meeting links for online appointments Payment integrations with Stripe, allowing clients to pay when they book an appointment or service Automation platforms such as Zapier, Make, n8n, and Pabbly to connect Koalendar with hundreds of apps and automate follow ups or internal workflows WordPress friendly setup, plus productivity tools like a Chrome extension for quickly sharing booking links Personalized Booking Pages Create clean, professional booking pages that match your brand and website design. Your visitors can make an appointment without leaving your website. Customize colors and layout Share a direct booking link or embed on any page Works with WordPress blocks, shortcodes, or widgets Optimized for desktop and mobile users Smart Availability and Calendar Sync Koalendar connects to all your existing calendars to keep your schedule accurate at all times. Sync with Google Calendar, Outlook, and iCloud Prevent double bookings automatically Set working hours, buffers, and time off Control availability per meeting or service Team Collaboration Built for teams that need shared scheduling. Schedule meetings with multiple team members Round robin and collective availability options Each team member connects their own calendar Perfect for agencies and growing small businesses Multiple Services and Appointment Types Koalendar lets you create multiple services and appointment types within a single booking system, each with its own duration, availability, and rules. This makes it easy to offer different kinds of meetings or services on your WordPress website without juggling multiple calendars or tools. Visitors simply choose the service they need and book an appointment online that fits your schedule. For example, a service based business such as a wellness studio, repair service, or local professional can create appointment types like initial visits, recurring services, or premium sessions, each with its own time length and booking rules, making it easy for customers to schedule the right service directly from the website. Group Bookings and Classes Koalendar makes it easy to manage group bookings and classes directly from your WordPress website. You can allow multiple attendees to book the same session, set participant limits, and keep everything organized in one scheduling system. This is ideal for workshops, coaching programs, fitness or wellness classes, and training sessions, where multiple people need to book the same time slot while you stay in control of capacity and availability. Custom Automations and Reminders (included in PRO plan) Send personalized confirmation and reminder emails before each appointment or meeting. This helps keep clients informed, reduces no shows, and saves time spent on manual follow ups. Custom Booking Forms (included in PRO plan) Collect additional information at the time of booking, such as contact details, service preferences, or special requests. This is especially useful for service businesses that need context before an appointment. Payments (included in PRO plan) Accept online payments for appointments and services directly through your booking system. Charge for consultations, classes, or sessions in advance to simplify billing and secure bookings before they happen. Backlog updates Here are some recent product updates: Appointment types (services): list multiple services directly on your booking page, each with its own price and duration Multiple and recurring bookings: invitees can book multiple dates, or set up recurring bookings, in a single flow Booking durations in hours or days: configure event durations using hours or days New booking page editor: redesigned editor for faster page creation and updates Koalendar available in Spanish and French File upload: collect files with the Google Drive integration Stripe Checkout: offer more payment methods and collect taxes Gmail integration: send booking emails from your own address New integrations: Zapier and Telegram Apple Pay and Google Pay supported automatically on supported devices and browsers

NetterTech Events stores your events in dedicated database tables rather than WordPress post meta. That architectural choice means calendar queries stay fast whether you have 50 events or 5,000, and it means recurring event schedules are pre-computed rather than recalculated on every page load. Recurring events that handle real schedules: Full RFC 5545 recurrence rule support covers patterns like “every second Tuesday” and “last Friday of the month.” Change a rule, and occurrences regenerate automatically. Ticketing without per-ticket fees: Sell tickets through WooCommerce with automatic capacity tracking per occurrence. Series passes let attendees buy once for an entire recurring event run. No external ticketing service means no percentage taken on each sale. Free event registration: RSVP forms work without WooCommerce for events that don’t require payment. Attendees register, receive confirmations, and can be tracked through the same admin interface. Check-in built in: Manual attendee check-in by name or email search works from any device. QR code and volunteer check-in workflows can be added with the separate NetterTech Events Pro plugin. Spaces and locations management: Define bookable spaces and physical locations through a dedicated admin interface. Assign spaces to events via the event editor metabox to track which room or area each event occupies. Display options for any layout: Month, week, and day calendar views. Carousel slider for featured events. Filterable grid with live search. Weekly regulars table for recurring events. All three calendar views are available as Gutenberg blocks and Beaver Builder modules. Reminder emails that send themselves: Configure pre-event reminders at any interval you choose. Emails go out automatically via WordPress cron – no third-party service required. SEO handled at the source: Schema.org Event structured data integrates with Yoast SEO and Rank Math’s JSON-LD output rather than generating a second duplicate block. Custom sitemap entries cover recurring occurrence URLs individually. Custom SEO title variables (%%nettertech_events_event_date%%, %%nettertech_events_event_venue%%, %%nettertech_events_event_organizer%%) let you build dynamic titles per-occurrence. Breadcrumb trail follows the full event hierarchy. Works without either SEO plugin using built-in Schema.org and Open Graph output. Accessibility throughout: Designed to WCAG 2.2 AA standards with ARIA labels, full keyboard navigation, focus management, and reduced motion support across every public-facing view. Your data stays yours: All attendee, ticket, and event data is stored in your WordPress database. No data is sent to external services. GDPR tools let site administrators export or erase attendee records on request. For Developers: Repository and Service patterns with documented hooks and filters throughout Theme-overridable templates in nettertech-events/templates/ – copy to your theme to customize REST API for headless or custom implementations Over 5,000 automated tests with over 17,000 assertions covering core functionality Shortcodes [nettertech_events_calendar] – Monthly, weekly, and daily calendar views with navigation. [nettertech_events_list] – Filterable event grid or list with live search and category filters. (Also available as [nettertech_events_grid] for grid-only layout.) [nettertech_events_carousel] – Sliding carousel of upcoming events with configurable columns. [nettertech_events_rsvp] – RSVP registration form for free events. Supports party size and custom confirmation messages. [nettertech_events_regulars] – Display weekly recurring events in a compact table grouped by day of week. Replaces manually maintained static HTML with live data from published recurring events. Parameters: limit – Maximum events to display (default: 50) show_venue – Show venue name column, true/false (default: true) show_time – Show event time column, true/false (default: true) show_day – Show day-of-week grouping, true/false (default: true) heading – Optional table heading text (default: empty) class – Additional CSS class for the wrapper (default: empty) Example: [nettertech_events_regulars show_venue="false" heading="Weekly Classes"] Third Party Services This plugin does not connect to any external third-party services by default. WooCommerce Integration (Optional) When WooCommerce is installed and activated, this plugin integrates with it to provide paid ticketing functionality. WooCommerce is a separate plugin that handles payment processing through payment gateways you configure. WooCommerce is developed by Automattic WooCommerce Terms of Service WooCommerce Privacy Policy No data is sent to WooCommerce servers by this plugin. All ticket and order data remains in your WordPress database. QR Code Generation QR codes are generated entirely on your server using the bundled PHP QR Code library. No external API calls are made. Bundled Third-Party Libraries NetterTech Events is licensed under GPL-2.0-or-later. The plugin bundles the following GPL-compatible third-party libraries via Composer. The authoritative dependency list and resolved versions live in composer.json and composer.lock (both shipped with the plugin so reviewers can verify vendor contents). chillerlan/php-qrcode 6.0.1 — MIT (selected from the upstream dual MIT / Apache-2.0 license). Used for QR code rendering on tickets and check-in flows. Source: https://github.com/chillerlan/php-qrcode chillerlan/php-settings-container 3.3.0 — MIT. Transitive dependency of php-qrcode. Source: https://github.com/chillerlan/php-settings-container symfony/polyfill-mbstring 1.33.0 — MIT. UTF-8 string-function polyfill (transitive). Source: https://github.com/symfony/polyfill-mbstring The MIT license is selected for the dual-licensed chillerlan/php-qrcode because Apache-2.0’s patent-retaliation clause is GPL-3.0+ compatible but not GPL-2.0 compatible. MIT keeps the bundled code consistent with the plugin’s GPL-2.0+ choice. Privacy Policy NetterTech Events collects and stores the following data in your WordPress database: Data Collected Attendee Records: Name, email address, and ticket details when users purchase tickets or submit RSVPs Accessibility Requirements: An optional free-text field on the checkout and RSVP forms, used only to arrange accommodations for that event; kept out of emails and logs, and cleared automatically 30 days after the event ends (filterable) Check-in Data: Timestamps when attendees are checked in at events Event Data: Event details, occurrences, and ticket configurations created by administrators Data Storage All data is stored locally in your WordPress database in custom tables prefixed with nettertech_events_ (e.g. {$wpdb->prefix}nettertech_events_events) No data is transmitted to external servers by this plugin Data retention is controlled by you; delete events and ticket records to remove associated data Data Export and Erasure Attendee data integrates with WordPress’s built-in privacy tools Site administrators can export or erase attendee data on request Event organizers should document ticket/RSVP data collection in their site privacy policy Cookies This plugin does not set any cookies. Source Code & Build The plugin ships pre-built block assets under blocks/*/build/ (compiled from @wordpress/scripts) so it runs without requiring users to install Node.js or run a build step. The human-readable source for every compiled file is included in the same distribution under blocks/*/src/: blocks/calendar/src/index.jsx — source for blocks/calendar/build/index.js blocks/carousel/src/index.jsx — source for blocks/carousel/build/index.js blocks/event-grid/src/index.jsx — source for blocks/event-grid/build/index.js To rebuild from source after editing any *.jsx file: npm install && npm run build The build configuration lives in package.json (scripts.build) and uses the official @wordpress/scripts toolchain with no custom webpack config. Additional Resources Plugin Homepage Support Forum