Calday is a scheduling app for service businesses, solo professionals, and small teams that want to manage bookings without the usual back-and-forth. It combines booking pages, calendars, reminders, payments, and client records in one platform [1][8]. It is built for everyday appointment workflows such as publishing a booking link, collecting client details, sending automated reminders, and handling cancellations or reschedules. The product also supports manual appointment approval, service add-ons, and automatic time-zone handling for clients .