Crosswords go across and down the App Store
Civilised, traditional and downloadable word fun available now on your iPhone
Crossword puzzles are a great idea for the handheld platforms, but they're stymied (4 Across: To prevent somebody or something from making further progress) by an eventual lack of words.
This is the real appeal of the latest iPhone game, which downloads new crosswords to your handset each day. They also come loaded with hints, clues and an option to track your improvement.
The new puzzles are provided by a variety of newspapers, so it's unlikely there'll be any particular concerns over quality – though it's worth noting these will be US newspapers. Most crosswords should cross the pond quite transparently, of course, but bear in mind your spelling (since Americans don't write proper like what we do) and the fact that baseball questions might also crop up.
As a handy Pocket Gamer hint for anyone who does come afoul of a baseball question, the World Series is only played in America, and only features American teams. That should get you through 2 down. You're welcome.