1. The Lite version has a limit of 5 Ragic sheets whereas the professional version has no such limit. A Ragic sheet refers to one type of form for users to enter data. If you have a customer information sheet containing data on 100 clients, it would still only be counted as 1 sheet, since the forms can have unlimited entries.
3. You can only have one system administrator that can access the design and backend in the Lite version while the professional version has no limit.