Top notch! I really like the map viewpoint. The images of the standard plates is helpful. Turn the iPad to vertical and I get information overload!
I appreciate that there is a limit article on each state with the initial download. Updating to current, full Wikipedia article is about 30 M and once it's done there is so much info on each state it's almost overwhelming. And the articles are available when the iPad is off-line!
I like the two sets - visited states and viewed license plates.
Things to make it better:
Canada provinces and Mexico states are missing. And some Indian reservations issue plates too.
My crew likes to keep track of more than just car plates. Truck, trailer, special, motorcycle, and veteran are the current list.
Of the license plate game apps I've seen, this is my favorite!