DOCAT What to do is an educational app developed by Youcat Foundation gGmbH, available for iPhone users. The app aims to provide principles for analyzing global challenges and taking action. Users can read the DOCAT, a summary of the social teaching of the Catholic Church, in a question-answer format. The app allows users to connect with like-minded individuals, study important topics in depth with study guides, get inspired by community initiatives, and put their learnings into practice.

In DOCAT, users can read 36 questions and answers for free, with the option to access all content through in-app purchases. The app facilitates group study sessions, encourages social media sharing, and promotes taking real-world actions to effect positive change.