The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, or iPad which have dropped in price, as listed below. At up to $3 off, most are at or near the lowest price we've seen. The deals, all with applicable platforms noted:

• Extinction 3D for iPhone, iPod touch, and iPad for 99 cents ($1 off): Strategy game
• PDF Reader Pro for iPhone, iPod touch, and iPad for 99 cents (pictured, $1 off): Action game
• World Heritage Britain for iPhone, iPod touch, and iPad for 99 cents ($3 off): Historical education tool
• Piano* for iPhone, iPod touch, and iPad for 99 cents ($1 off): Piano emulator
• Paint Studio for iPhone, iPod touch, and iPad for 99 cents ($3 off): Painting tool
• Weight Computer for Phone, iPod touch, and iPad for 99 cents ($1 off): Weight control assistant
• The Lost Bears Universe for Phone, iPod touch, and iPad for 99 cents ($1 off): Action game