PATIO aims to improve the quality of life of directly and indirectly affected persons after the diagnosis of prostate cancer (PCa). A first milestone is the PATIO health guide app “PATIOSpots”, which was developed jointly with affected persons in a co-design and co-creation process. One of the first actions a person takes after the diagnosis PCa is trying to find reliable, high-quality, structured, and easily accessible sources of information. “PATIOSpots” aims to be a game changer and digital orientation guide for patients and caregivers at a time when it's needed the most. The following article provides insights into the app, explains the conceptual phase, the involvement part as well as its development, and the benefits for patients and caregivers. Parts of this manuscript were presented in a talk at the Austrian Citizen Science Conference 2022.