Ah, this is jogging my memory:

HyperCard 1.x was given away as a standard item with the purchase of a new Mac Plus, SE, or II. This was the key to HyperCard’s early success. HyperCard 2.x had to be purchased separately. However, Apple made and gave out HyperCard Player, a freeware application that allowed one to run HyperCard stacks.

But yeah, HyperStudio was something else entirely (HyperCard-inspired but not compatible).