What is the "Your studios" box at the top of Activity Studio?

It shows every studio you own as a small chip with its icon and name, for example "Coloring Books". If your license also includes studios that are not in the app yet, they are grouped in one chip such as "+3 more on the way" (hover it to see their names). The box also has the "Check my purchases" and "Enter a key" buttons. If you own no studio yet, it reads "Each studio is yours for $97, once".