A system linked to Xero where small businesses who are mobile or not that can manage their customer appointments, have reminders emailed or sms to customers. Have an option to pre-populate bookings in advance of the same service. Once a booking is confirmed, have an option of job completed and send invoice. Customers are also able to log in to view their next appointment or reschedule. I found a website that has this function - www.gettimely.com.