If there's any criticism it would be that once you get good at it, you'll find the first few minutes after re-starting a bit dull while you wait for the action to pick up. Would be better if you could re-start at certain stages in the game, say after 10 planes, 20 planes etc.
Get it here for 59 UK pence from iTunes.

http://www.firemint.com/flightcontrol