The app GRIMMkids enables children between 5 and 12 years to explore the GRIMMWELT and in particular the exhibition area with a focus on linguistics. The GRIMMIES are the five key figures of the GRIMMWELT to guide the children through the exhibition. Modern breadcrumbs in the form of stylized chocolate cookies show the way. By scanning the cookies placed on the floor, the quiz questions are triggered at the respective station.