The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, and iPad which have dropped in price, as listed below. At up to $4 off, most are at or near the lowest prices we've seen. The deals, all with applicable platforms noted:

• Popsicolor for iPhone, iPod touch, and iPad for 99 cents ($2 off): Color matching tool
• The House of the Dead: Overkill­- The Lost Reels for iPhone, iPod touch, and iPad for 99 cents ($4 off): Zombie battle game
• Word Soup for iPhone, iPod touch, and iPad for 99 cents ($1 off): Word search game
• Zoe's Green Planet for iPhone, iPod touch, and iPad for 99 cents ($2 off): Kids' interactive storybook
• Plane Finder AR for iPhone, iPod touch, and iPad for 99 cents ($2 off): Flight tracking utility
• Find The Game for iPhone, iPod touch, and iPad for 99 cents ($1 off): Sports broadcast reference
• Downcast for iPhone, iPod touch, and iPad for $1.99 ($1 off): Podcast playback utility