The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, or iPad which have dropped in price, as listed below. At up to $5 off, each is at the lowest price we've seen. The deals, all with applicable platforms noted:

• neu.Notes+ for iPhone, iPod touch, and iPad for free ($5 off): Note-taking and drawing tool
• W.E.L.D.E.R. for iPhone, iPod touch, and iPad for 99 cents ($1 off): Word game
• iCircuit Training for iPhone, iPod touch, and iPad for 99 cents ($1 off): Fitness training utility
• PhotoShelf for iPhone and iPod touch for 99 cents ($1 off): Photo display tool
• iLLusions! for iPhone and iPod touch for 99 cents (pictured, $1 off): Optical illusion collection
• 3D Hely Pilot for iPhone and iPod touch for $1.99 ($1 off): R/C helicopter simulation
• Opus Domini Mobile Pro for iPhone, iPod touch, and iPad for $3.99 ($1 off): Personal planner and management