Embird is modular software, which means that you can choose which modules to buy. Installation file contains main Embird program and all plugin modules for convenient download and installation, but only registered/purchased items are activated. To activate, each module needs its own password. Otherwise, module runs in demo mode.
There is no difference between downloading the demo and full version, they are the same files. An unregistered user is able to use the Embird demo only for 30 days and after this period the program expires. Demo versions of plug-ins do also have other limitations. Registered user does not have these limitation.