The Religious Education Quiz App, "reli.check!", Allows students to playfully engage with and deepen topics of the fourth grade and lower secondary education curriculum (ZIS, NMS and AHS). The app can also be used as an introduction to a new topic to ask the students' prior knowledge. The app serves as an innovative element in the field of didactics and can open up the sensible use of new media for students. Thus, this digital learning game can be well integrated into the context of "face-to-fac