Report Server is a web application to store and manage files (reports). It is an industry standard enterprise app - it has interface for editing and managing reports, users and user roles, scheduling. It is designed responsive, for a heavy user input with a lot of specifics for the reporting field.
Report Designer is a desktop app for creating and editing reports, it counts on users’ knowledge to work with data sources, analytics and data visualization tools. Report Server and Report Designer compliments each other. Although both of the apps’ users have to be trained professionals to use the apps, the goal was the same as designing for any type of user - to improve their experience.