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 $2 off, most are at or near the lowest price we've seen. The deals, all with applicable platforms noted:

• Impression HD for iPhone, iPod touch, and iPad for 99 cents ($2 off): Art collection
• Toca Robot Lab for iPhone, iPod touch, and iPad for 99 cents ($1 off): Robot-building app
• Parenting's Birthday Party Playtime for iPhone, iPod touch, and iPad for 99 cents ($1 off): Birthday party simulator
• Paint My Wings for iPhone, iPod touch, and iPad for 99 cents ($1 off): Virtual butterfly creator
• Lanterns for iPhone, iPod touch, and iPad for 99 cents ($1 off): Puzzle game
• Palettes Pro for iPhone, iPod touch, and iPad for $3.99 (pictured, $2 off): Color productivity tool