
RC7 Professional is a "lite" version of RC7 Ultimate, 170 models instead of 200, 43 sceneries instead of 50, AirRace mode, Torque Trainer and F3A-Gitter removed.
This software must be activated once installed. It can be activated 3 times in total (even on different computers).
Not activating the software restricts the simulator to 1 model, 1 scene.