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 $1 to $4 off, each is at the lowest price we've seen. The deals, all with applicable platforms noted:

• Pinball Ride Unlimited for iPhone,iPod touch, iPad for 99 cents ($4 off): Pinball game
• Kinetic GPS for iPhone, iPod touch, iPad for 99 cents ($3 off): GPS tracking and timing tool
• Photogene² for iPhone, iPod touch, iPad for 99 cents ($1 off): Photo management tool
• ProCamera for iPhone, iPod touch, iPad for 99 cents ($2 off): Photo taking software
• STREET FIGHTER II COLLECTION for iPhone, iPod touch, iPad for 99 cents (pictured, $3 off): Classic fighting game
• Zen Bound 2 Universal for iPhone, iPod touch, and iPad for 99 cents ($2 off): Puzzle game
• Catan for iPhone, iPod touch, iPad for $2.99 ($2 off): Strategy game