Guide to FMFI is a mobile application that makes it easier for students to orientate themselves at the Faculty of Mathematics, Physics and Informatics of Comenius University. The application contains a map of the faculty, allows navigation between two points and provides information about the rooms and staff of the faculty. The mobile application is supported by a server application from which it obtains changes in employee data, but other data is stored locally on the mobile device. As part of the bachelor's thesis, we moved all local data from mobile application to the server and the mobile application obtains only changes. Updating of the data and sending changes to mobile application is implemented in a universal way. In addition, we have added support for open spaces, departments, vending machines and new features such as navigation through elevators and room equipment to the application. In this thesis we describe the original version of the mobile application from the user and technical point of view, its comparison with similar existing applications and we also analyze the original version of the server application. Next, we talk about the implementation of a new version of the server application as well as the extension of the mobile application with new objects and features. Keywords: guide, universal update, sending changes, mobile application, server application