This year students of Radboud University have developed 2 apps (Kataku 1 and Kataku 2) for the children of West Papua so that they can learn Indonesian. Both apps belong to the already developed app in 2018 namely Kataku 2. With all these apps the children can, after the lesson, get to know the Indonesian language in a playful way. Kataku apps are intended as a supplement to the current education system, not as a replacement. The subject matter content of the apps comes from existing powerpoints. Kataku 1 is about learning the alphabet, watching – listening – filling in. In Kataku 3 a story is read out and there is practice with sentence structure and grammar.