The Appointment & Booking System publishes booking pages for your services and resources: customers pick slots governed by availability rules, prepay if required, and get automated reminders — every booking landing in the ERP. For clinics, consultants, salons, training centers, and any business converting "call us to book" into self-service scheduling. Planned features include booking pages per service and staff member with buffer and lead-time rules, resource booking (rooms, equipment) with conflict prevention, prepayment or deposit collection through configured gateways, WhatsApp/SMS/email reminders that cut no-shows, rescheduling and cancellation policies, Google/Outlook calendar sync, and booking-to-invoice automation. This app is currently in development on the ECOSIRE build pipeline. It will ship first for Odoo 17, 18, and 19 simultaneously, with an ERPNext port following on the v15/v16 track — the same triple-version coverage as every live ECOSIRE app. One-time license, free updates within your major version. Register your interest on this page to be notified at launch and to help shape the first release.