if you bought logic from the app store, then i think up to 5 (or is it 7) other of your registered apple devices.
this needs clarification. anyone else care to chip in?
so, where did you buy logic from?
if it's the older version, still being updated, i don't know, i haven't tried that. but i have logic from way back and and since then have had 3 or 4 laptops and it has migrated across fine, although the it is not still on the old laptops because i don't use those for music anymore.
you know, this would be answered with a phone to your nearest apple store, or the place you bought logic from.