Acorny is a physical toy and coding app that supports young children in computational thinking. The Acorny kit was designed with the motif of computer processing flow to help beginners intuitively understand computational-thinking concepts. Based on the input and output module selected by the coding beginners, the Acorny app provides various coding tutorials, recommendations, and challenges to enable beginners in a range of activities to explore computational concepts. It is an ideal tool to introduce young children to coding activities.