The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, or iPad for free, as listed below. At $1 to $5 off, each is at the lowest price we've seen. The deals, all with applicable platforms noted:

• Las Vegas Offline Street Map for iPhone / iPod touch: Map of Las Vegas
• Washington DC Offline Street Map for iPhone / iPod touch: Map of DC
• Shanghai Offline Street Map for iPhone / iPod touch: Map of Shanghai
• Mr. Ninja for iPhone / iPod touch (pictured): Action game
• Dark Shrine 3D for iPhone / iPod touch: RPG
• Elemental Knights Online for iPhone / iPod touch: MMORPG
• Warfare Incorporated for iPhone / iPod touch: Real time strategy game
• Holographium for iPhone / iPad: Art / photo app
• SkySafari 3 for iPhone / iPad: Astronomy app