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

• USB Disk & File Transfer for iPhone, iPod touch, and iPad: File storage utility
• Backbreaker 2: Vengeance for iPhone, iPod touch, and iPad: Football game
• Doors&Rooms+ for iPhone, iPod touch, and iPad: Escape game
• Unknown Orbit for iPhone, iPod touch, and iPad (pictured): Space exploration game
• City Maps 2Go for iPhone, iPod touch, and iPad: Navigation tool
• 3volution for iPhone, iPod touch, and iPad: Puzzle game
• Balls for iPhone, iPod touch, and iPad: Zen relaxation game