The goal of this project was to develop an application that would allow for tracking of criminal activity. Functionalities incorporated in this app are importing and handling of data regarding criminal activity, display of occurrences of criminal activities as layers on a map, as well as predicting future criminal activities by analysing the ones that occurred before. Developed application supports creating, reading, updating and deleting data regarding criminal activities. Application supports upload of correctly formatted files that contain data about criminal activities. A display of criminal activities on a map depending on type of crime and time period has been enabled. User can predict future criminal activities based on previously committed ones, using parameters for group size, time period and type of activity. Lastly, user can inspect the predictions and delete them. A database first approach was used when creating the application by developing a database in SQL Server Studio. IDE used during development was Visual Studio. Afterwards a program model of the database was created using Entity Framework. For display of data on the map software package Leaflet was used. For expansion of functionalities of Leaflet and help with grouping of points Turf.js package was used.