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:

• iContract for iPhone, iPod touch, and iPad for 99 cents ($2 off): Contract date-tracking
• Photogene⁴for iPhone, iPod touch, and iPad for 99 cents ($2 off): Photo editing tool
• IQ Mission for iPhone, iPod touch, and iPad for 99 cents ($2 off): Brain-training tool
• Talisman Prologue HD for iPhone, iPod touch, and iPad for $1.99 ($3 off): Serial fantasy game
• Gangstar Vegas for iPhone, iPod touch, and iPad for $2.99 ($4 off): Open-world adventure game