The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, or iPad for free, as listed below. At up to $10 off, each is the best deal we've seen. The deals:

• Recorder Pro for iPhone, iPod touch, and iPad: Voice recording tool
• Montessori Numbers for iPhone, iPod touch, and iPad: Math activities for kids
• Beat the Boss 2 for iPhone, iPod touch, and iPad: Supervisor battle game
• Bladeslinger Ep.1 for iPhone, iPod touch, and iPad: 3D action game
• Camera and Lenses for iPhone, iPod touch, and iPad: Camera accessory comparison tool
• Archer 2 for iPhone, iPod touch, and iPad (pictured): Physics-based game