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:

• Heroes and Castles for iPhone, iPod touch, and iPad for 99 cents ($1 off): Tower defense game
• Sky Gamblers: Rise Of Glory for iPhone, iPod touch, and iPad for 99 cents ($2 off): Aerial combat game
• Rayman Jungle Run for iPhone, iPod touch, and iPad for 99 cents (pictured, $2 off): Endless running game
• Crazy Trip for iPhone, iPod touch, and iPad for 99 cents ($2 off): Children's learning game
• Total War Battles for iPhone, iPod touch, and iPad for $1.99 ($1 off): Real-time strategy game
• Skylanders Battlegrounds for iPhone, iPod touch, and iPad for $2.99 ($4 off): Action game
• Bug Princess 2 for iPhone, iPod touch, and iPad for $4.99 ($2 off): Role-playing game