Licensed does exactly what it was made to do, store your app's serial #'s in a quick no non-sense fashion. Open Licensed, you immediately see everything you need, copy and past serial #'s from perchase email, fill in the 4 open fields and back to work. The most time consuming thing about Licensed is typing a serial # out. I run Licensed on a MBP 2.16, G5 2ghz, and I ran it on my late PB 1.67 w/ no issue's what so ever.