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

• TactioHealth for iPhone, iPod touch, and iPad: Weight loss and health management
• The Curse for iPhone, iPod touch, and iPad: Puzzle game
• StockTouch for iPhone, iPod touch, and iPad (pictured): Stock-tracking tool
• Grove Keeper for iPhone, iPod touch, and iPad: Strategy game
• APO Snow for iPhone, iPod touch, and iPad: Snowsports game
• Hackycat for iPhone, iPod touch, and iPad: Note-taking tool