Warner Brothers is running a $0.99 sale on several of its games, including the two Harry Potter LEGO games, as well as the iPhone/iPod touch LEGO Batman Gotham City Games.
Both of the Harry Potter games are compatible with iPhones, iPod touches, and iPads (check the requirements at the links below).
LEGO / Warner Brothers Apps on Sale
– iPhone/iPod Touch/iPad: LEGO Harry Potter: Years 1-4 – iTunes
– iPhone/iPod Touch/iPad: LEGO Harry Potter: Years 5-7 – iTunes
– iPhone/iPod Touch: LEGO Batman: Gotham City Games – iTunes
There is no information on how long these will run or if they are available in all areas. My guess is through at least July 4 or July 5, 2012, as there are several July 4 sales going on.