Here are some links for Halloween apps. Enjoy!
Mashable’s ten top iPhone Halloween apps.
DesignCrave’s five Halloween apps for iPhone and iPad
Best kid iPhone iPad apps for Halloween by DVD to iPad converter
10 best Halloween apps for iPad by iPad World
From Apple store 13 spooky apps
iPad 2 blog post on Halloween apps
The best Halloween apps for your iPad by iPadintouch
AppAdvice lists Halloween apps
Techie Buzz five Halloween apps for iPad/iPhone
Don’t forget the Trick or Tracker app will be free to download on Halloween.