Bremen -
My wife and I aren't what you would call "Avid" crossworders...as in, we don't do them every day. But DAMN this app blows anything out of the water. And the initial fee seems steep until you realize you never have to haul around a USA Today and find Section D ever again!
Such a great app!
But it takes brains, and most people want mindless fun so it's not usually mentioned with great games.