All plans provide the same functionality, the only difference is the number of categories and users with login in each plan. You can have an unlimited number of public visitors to your calendar. Here is a description of the different subscription plans and prices:

Plan NameCategoriesUsersMonthlyYearly
Basic310$11$123
Standard820$17$189
Professional2040$27$274
Enterprise40100$47$474


Contact us at sales@calendarwiz.com if you need to more categories or users.