Client Sync is a WordPress plugin for appointment booking and client management, with a free core version and a paid Pro tier adding resource scheduling and…
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Client Sync is a WordPress plugin built by Dependent Media for service-based businesses, clinics, and consultants that need to manage client appointments, notes, and billing directly from their WordPress site. Instead of relying on WordPress's default post table (which the vendor says slows down under heavy booking volume), Client Sync uses custom database tables so booking calendars stay responsive even with a large number of available times and bookings.
The plugin ships as a free core version distributed on WordPress.org (developed by Joshua Jordan), built around a single [clisyc_booking_form] shortcode that can automatically present a time-based calendar, a multi-day rental date-range picker, or a group-class booking form depending on how it is configured. It supports flexible booking modes -- single time-window appointments, capacity-limited group bookings for classes or tours, and multi-day bookings for equipment, room, or vehicle rentals.
Client Sync Pro is a paid annual upgrade (listed at $278.00 USD/year on the vendor's site) that adds an "Availability Dimensions" system: a booking is only confirmed once the service, an assigned staff member, and a required room or piece of equipment are all available at the same time, which is aimed at businesses like clinics, salons, or rental operators that need to coordinate more than one resource per booking. Pro also adds a HIPAA-focused mode that the vendor says encrypts client notes at rest, anonymizes data before syncing to Google Calendar, and keeps a tamper-resistant audit log; two-way Google Calendar sync so staff see bookings on their phones and Client Sync blocks out personal Google Calendar events; membership and package selling for recurring bookings; and a manager-facing timeline view across staff and resources.
On the payments side, Client Sync integrates with WooCommerce to support deposits, full up-front payment, or automatic "pay on day" charging, so the booking and payment flow runs inside the same WordPress/WooCommerce stack a business may already be using for its website.