Joshua Jordan

📖 <a href="https://github.com/hsojhsoj/client-sync-monorepo/wiki" rel="nofollow ugc">Full Documentation</a> — Setup guides, shortcode reference, payment configuration, and more.
Client Sync transforms your WordPress site into a complete client and appointment management powerhouse. Designed for service-based businesses, clinics, consultants, and professionals, this plugin provides a robust, scalable, and flexible system to handle the entire client journey.
Whether you need simple one-on-one appointment booking, multi-day resource rentals, or complex group classes, Client Sync’s unique “Dimension” architecture and a single, powerful <code>[clisyc_booking_form]</code> shortcode can handle it all intelligently. The system automatically detects whether to show a time-slot calendar, a multi-day rental search, or a single property’s booking calendar based on the context of the page.
Built on a high-performance architecture using custom database tables, Client Sync ensures your site remains fast and responsive, even with complex schedules and high appointment volumes.
<h4>Core Features</h4>
<ul>
<li>
Flexible Booking Modes:
<ul>
<li>Time Slots: Perfect for standard appointments, coaching calls, and consultations.</li>
<li>Group Bookings (Multi-Capacity): Easily manage classes, workshops, or tours by setting a capacity for any service. The system automatically tracks spots left.</li>
<li>Multi-Day Bookings: Ideal for rentals (equipment, rooms, vehicles) where clients select a start and end date. Features an intuitive drag-to-select date range picker.</li>
</ul>
</li>
<li>
Powerful & Intersecting Schedules:
<ul>
<li>Availability Dimensions: Create schedules based on service type, location, or practitioner for dynamic booking systems.</li>
<li>Resource Scheduling (Pro): Designate dimensions like “Rooms” or “Equipment” as Resources. A time slot is only bookable if the service, practitioner, AND the required resource are all available at the same time.</li>
<li>Visual Availability Management: “Paint” available or blocked time on an admin calendar for one-off changes and overrides.</li>
</ul>
</li>
<li>
Availability Search Tool:
<ul>
<li>Add a powerful search form to your site with the <code>[clisyc_availability_search]</code> shortcode.</li>
<li>Allows users to search for available items (rooms, boats, properties) across a specific date range, ensuring they only see results that are open for their entire trip.</li>
</ul>
</li>
<li>
Dynamic Conditional Fields: Show or hide appointment fields based on the service selected. If a “House Rental” service is chosen, show “Bedrooms”. If “Car Rental” is chosen, show “Vehicle Type”. This creates a clean, relevant booking experience for any service.
</li>
<li>
Flexible Payment Options:
<ul>
<li>Stripe Direct Integration: Accept payments directly through Stripe Checkout — no WooCommerce required. Just add your API keys and you’re ready to go.</li>
<li>Deep WooCommerce Integration: Link each service to a unique WooCommerce product for accurate pricing, dynamic pricing rules (weekend surcharges, weekly discounts), and automatic totals for group and multi-day bookings.</li>
<li>No Payment Mode: Accept bookings without any payment gateway for free consultations or internal scheduling.</li>
</ul>
</li>
<li>
Extensible Custom Fields:
<ul>
<li>Unlimited fields for clients and appointments, including text, dropdowns, checkboxes, and a unique Image Map field (Pro).</li>
</ul>
</li>
<li>
Client & Manager Dashboards:
<ul>
<li>Clients view appointment history and update details via a dedicated account page.</li>
<li>Manager shortcodes create frontend dashboards for staff to view/edit appointments without full admin access.</li>
</ul>
</li>
<li>
Automation & Reminders:
<ul>
<li>Auto-generate future availability from templates.</li>
<li>Reduce no-shows with configurable email reminders.</li>
</ul>
</li>
<li>
iCal Export: One-click <code>.ics</code> file downloads for adding appointments to Google Calendar, Outlook, or Apple Calendar.
</li>
</ul>
<h3>External Services</h3>
This plugin includes optional integrations with the following third-party services.
<h4>Stripe Payments</h4>
<ul>
<li>
Purpose: This service provides direct payment processing through Stripe Checkout. When enabled, clients are redirected to a secure Stripe-hosted payment page to complete their booking payment. This feature is disabled by default and must be explicitly enabled and configured by the site administrator in the plugin’s Payments settings tab.
</li>
<li>
Data Sent:
<ul>
<li>Backend (Your Server): When a booking requires payment, your server sends the appointment details (amount, currency, description, and client email) to Stripe’s API to create a Checkout Session. A webhook endpoint receives payment confirmation events from Stripe, which are verified using HMAC-SHA256 signature validation.</li>
</ul>
</li>
<li>
Service Policies:
<ul>
<li>Use of Stripe is subject to the Stripe Services Agreement and Privacy Policy.</li>
<li>Privacy Policy: https://stripe.com/privacy</li>
<li>Terms of Service: https://stripe.com/legal/ssa</li>
</ul>
</li>
</ul>
<h4>Google reCAPTCHA v3</h4>
<ul>
<li>
Purpose: This service analyzes user interactions to distinguish between human users and automated bots, helping to prevent spam submissions. This feature is disabled by default and must be explicitly enabled and configured by the site administrator in the plugin’s settings (Client Sync > Settings > Style & Behavior > Spam Protection).
</li>
<li>
Data Sent:
<ul>
<li>Frontend (User’s Browser): When reCAPTCHA is enabled, a JavaScript file is loaded from Google’s servers. The user’s browser sends hardware and software information, including device and application data and the results of integrity checks, to Google for analysis. The user’s IP address is also collected.</li>
<li>Backend (Your Server): When a user submits a form, a verification token generated on the frontend is sent from your server to Google’s API for validation. This request includes the user’s IP address.</li>
</ul>
</li>
<li>
Service Policies:
<ul>
<li>Use of Google reCAPTCHA is subject to the Google Privacy Policy and Terms of Use.</li>
<li>Privacy Policy: https://policies.google.com/privacy</li>
<li>Terms of Use: https://policies.google.com/terms</li>
</ul>
</li>
</ul>
<h3>Copyright</h3>
Client Sync uses the following third-party libraries:
<ul>
<li>FullCalendar Scheduler
<ul>
<li>Source: https://fullcalendar.io/scheduler</li>
<li>License: GNU General Public License v3 (GPLv3)</li>
<li>Copyright: 2023 Adam Shaw</li>
</ul>
</li>
</ul>

Client Sync

Manage client registrations, appointments, payments, and appointment notes from a single, integrated system.

Mark

Wim Braam

Really Simple Plugins

Renee van Velthuijsen

Kelvinkuiper

Jeroen van der Kooij

SimplyBook.me

SimplyBook.me is the easiest way to start collecting bookings on your WordPress website. The plugin will allow you to register your free account and immediately publish your booking calendar on the front-end of your site. With a few clicks, you can easily add your services and service providers, and design the most beautiful booking widget. You will be collecting appointments and reservations in no-time!
<ul>
<li>Easy appointment scheduling</li>
<li>Simple plugin onboarding and configuration</li>
<li>Manage your calendar and bookings using the powerful mobile app (iOS and Android)</li>
<li>Accept touchless payments via the app on your onsite checkout</li>
<li>High email deliverability for reservation confirmations and appointment reminders.</li>
<li>Create multiple services, providers, categories and locations</li>
<li>Send email and SMS notifications to your customers for their bookings</li>
<li>Add “Book now” buttons on your Instagram, Facebook and Google Business Profile</li>
<li>Sell Memberships, packages & gift cards</li>
<li>Manage bookings for Classes & Events</li>
<li>Increase sales by offering products and service add-ons in the booking process</li>
<li>Marketing campaigns by emails and push notifications</li>
<li>Waiting Lists and “Make me look busy” features</li>
<li>Offer Coupons and a Loyalty System to enhance brand loyalty</li>
<li>Insights and statistics about your bookings, reservations, cancellations, workload and revenues</li>
<li>Adjust time zone settings if you have clients in different time zones</li>
<li>Create individual schedules for staff</li>
<li>Create multiple users related to providers</li>
<li>Accepting payments and/or deposits to confirm the bookings in the booking process</li>
<li>Easily implement your booking widget with a Gutenberg block, Elementor Widget or a shortcode</li>
</ul>
SimplyBook.me can be used for free up to 50 appointments per month. In addition, you can use one of the Special features for free! You will automatically be signed up for a Free 14-day trial, which allows you to test the Special Features without any restrictions, including advanced scheduling tools.
<h4>Why SimplyBook.me?</h4>
SimplyBook.me is an advanced online booking system that creates a professional booking widget on your WordPress site where your clients can book your services at any time. You will then have access to an admin interface where you can manage your bookings, calendar, and settings. On top of that you will get an admin app where you can manage all your bookings, handle appointments, adjust scheduling, and accept payments on the go. Thousands of clients all over the world have selected our booking system to make their business easy and comfortable to use (see our testimonials). SimplyBook.me provides users with a broad range of features so that you can tailor the system to your needs, irrespective of what industry you are in. 
For a more detailed understanding of the SimplyBook.me service, you can explore at the following link: <a href="https://simplybook.me/?ref=wordpress" title="SimplyBook" rel="friend nofollow ugc">https://simplybook.me/</a>
This plugin is developed by SimplyBook.me, is ISO27001 compliant and utilizes its API to transmit and store all information, including settings and details of bookings, as well as other personal client data, directly on SimplyBook.me. Before using the plugin, we recommend that you familiarize yourself with the privacy policy and terms of use of SimplyBook.me at the following links:
<ul>
<li><a href="https://simplybook.me/en/policy" title="SimplyBook Privacy Policy" rel="friend nofollow ugc">Privacy Policy</a></li>
<li><a href="https://simplybook.me/en/terms-and-conditions" title="SimplyBook Terms of Use" rel="friend nofollow ugc">Terms of Use</a></li>
</ul>
This will help you better understand the terms of use of the plugin and ensure your confidentiality.
This is the official SimplyBook.me plugin, developed by SimplyBook.me and Really Simple Plugins
<h4>About Really Simple Plugins:</h4>
Really Simple Plugins is the creator of most-used plugins Really Simple Security and Complianz. With a total of ~6 million installs, we focus on making the most user-friendly and easy-to-use plugins. We work with SimplyBook.me to make the most powerful booking system available directly in your WordPress dashboard.
<h4>Benefits of the Online booking system</h4>
Integrating an online booking system like SimplyBook.me is crucial for service businesses aiming to improve customer experience and extend their market reach. By enabling clients to book appointments outside of traditional office hours, an online scheduling and booking system increases accessibility and customer satisfaction. This system simplifies the entire appointment process, automates important reminders, and reduces scheduling errors, freeing up staff to concentrate on delivering superior service. 
Additionally, an online booking system offers powerful analytics that provide deep insights into customer behaviors and preferences. This data is essential for making informed adjustments to service offerings and planning effective marketing strategies. Last but not least it´s the best way to boost your sales by offering service add-ons and products for sale in the booking process, by sending tailored marketing email campaigns, offering coupons on less busy days, by prompting tips during check out and so much more, the options are endless!

SimplyBook.me – Booking and reservations calendar

Simply add a booking calendar to your site to schedule bookings, reservations, appointments and to collect payments.

Client Sync vs SimplyBook.me – Booking and reservations calendar