The package for a Paid distribution can be downloaded freely and used under our license agreement published in the product's page. The Silver version is free of charge and it comes only with the common functionality required for a basic user. This version allows the user to go through the application, learn its functionality without time restriction and still get a useful tool for the basic needs. Therefore, in order to unlock the more advanced features, you will need to purchase a Gold version.
Apart from the restricted features applied to the Silver version, both versions are identical. You do not have an expiration period with the Silver version. You do not need to re-install the software once you get the activation code, simply enter the code to continue using the software and all your data will remain intact.