HAprog is a medical application for the use of health professionals, capable of estimating the survival of patients with advanced cancer and assisting in oncological prognosis. It was developed based on a population of outpatients with solid tumors in a tertiary institution specializing in cancer care. The results obtained are statistical estimates and are subject to a margin of error, which may not represent reality. Therefore, it should be used with caution and in a complementary way to other clinical and laboratory metrics for interpretation and decision making. Conceived and developed by experts in the field.