The iTunes App Store offers downloads of several applications for Apple iPhone, iPod touch, or iPad for free, as listed below. At up to $4 off, each is at the lowest price we've seen. The deals:

• Touch Image Manipulator for iPad (pictured): Photo editing tool
• Beat the Beast for iPhone and iPod touch: Strategy and action game
• Map Overlay Tracer for iPhone, iPod touch, and iPad: Map drawing tool
• LunaSolCal for iPhone, iPod touch, and iPad: Sun and moon data tracking tool
• Propel Man for iPhone, iPod touch, and iPad: Puzzle game
• InfinityZero for iPad: Interactive graphic novel