The Instructor Edition can do everything: create and play. The Player Edition only plays scenarios.
Where each edition runs:
Instructor Edition: Windows and Mac computers. It is not available on iPad.
Player Edition: Windows, Mac and iPad. On iPad, Fire Studio is the Player app only, so simulations are built on a Windows or Mac Instructor Edition and then copied to the iPad.
Typically, the Player Edition complements the Instructor by providing additional, lower-cost licenses to use on separate computers or iPads, allowing multiple views or positions of the incident. This multi-license setup is typical of a CTC, but many departments also provide Player Editions to several of their stations to allow them to train with the simulations on their own.