The free OnkoLodz 2025 mobile app is a handy guide for conference participants: the 21st International Conference of the Oncology Section of the Polish Oncology Society (PTORL ChGiSz) "Head and Neck Oncology 2025. Advances in Otolaryngology," organized by the INCUS Association for the Development of Otolaryngology in Łódź. It includes a range of essential organizational information regarding the location, accommodation options, and travel. It allows participants to update the program on an ongoing basis and create their own personalized agenda.