This is a neat idea! The theming all around is very strong, nice art and music, and pretty addicting too. I liked the inherent risk/reward of trying to spin for a better wedge when knowing what the answer is. Great work all around.
Not sure if you're able to do this in-game already, but being able to view your current wheel in the shop screen would be a nice addition! Or at least a way of knowing how many of a given color wedge I have, for certain shop items.