The Easy Tracker tool was created some years ago to visualize paths of particles in an accelerator in x and y projections. The program uses as the input the accelerator optics files (TWISS files) and allows modifications of various magnetic elements in real time to study their impacts on particle trajectories and detector acceptances. In 2021, the program was further expanded as part of a successful student project at Faculty of Mathematics and Physics of Charles University UK. This upgrade covered production of histograms of interesting quantities at any location (plane) of an accelerator (e.g., distribution of coordinates, momentum and energy of particles, their filtering, acceptance calculation). Another improvement/upgrade of the software was made during last summer as a part of the project within CERN summer student programme 2023. The informal seminar will be devoted to the explanation of the software, its use, its current limits, and plans for other upgrades.