This add-on is designed for businesses. Pricing starts at $9.99/mo with a 14 day free trial. You can install the app for free. However, you need to purchase a license to set reminders. Click to "Read more" for extra information. SMS Appointment Reminder has been designed to be very easy and simple to use. It's seamlessly integrated with your Google Calendar™. After the initial set-up, setting an appointment reminder is as easy as adding your customer phone number in the calendar event title or in the event description. Once you've set a reminder you can forget about it. The add-on will automatically send the reminders at the scheduled time, including recurring reminders. Also, it will take care of any reschedule or deleted event, updating the reminders accordingly. Don't let your customers disrupt your schedule. Start reducing no-shows now! Need help? support@smsappointmentreminder.app Check-out our site: https://smsappointmentreminder.app