The iTunes App Store offers downloads of several applications for Apple iPhone, iPod touch, or iPad for free, as listed below. At up to $3 off, each is at the lowest price we've seen. The deals:

• Candy Guard for iPhone, iPod touch, and iPad: Tower defense game
• Magic Portals for iPhone, iPod touch, and iPad: Puzzle game
• Great Little War Game HD for iPhone, iPod touch, and iPad: Turn-based strategy game
• keyOne for iPhone and iPod touch: Password management tool
• Moto Racing Fever for iPhone and iPod touch (pictured): Racing game
• Calculator∞ for iPhone, iPod touch, and iPad: Calculation tool
• Haunted 3D Rollercoaster Rush for iPhone and iPod touch: Rollercoaster simulation