Last night, my daughters and I spent several hours working our way through the first levels of Red Herring (free, with in-app purchases), a twistedly difficult new game from the creator of 7 Little Words and Moxie. The game presents you with 16 phrases at a time, which you categorize into 3 meaningful groups of 4, plus a "red herrings" column for the extras. If you're playing the most difficult level -- and the game isn't nearly as much fun unless you are -- it's a true challenge to sort out the meaningful groupings from the red herrings.
Like 7 Little Words, you get the initial puzzle pack for free. In Red Herring, this consists of 50 challenging puzzles to start with. Once hooked, you pay for additional packs. The puzzles can be fiendish, especially if you choose to work without the built-in categories or partial solutions offered by the easy and medium levels. 10 gateway hints are offered for free. After that you pay US$1.99 for unlimited hints.
My family had a ball with this -- it was tons of fun and involved lots of brainstorming. Throw the display over to a TV via Air Play and it's the perfect party game as well. We really liked it. Recommended.