As our lives become more hectic, and our commitments multiply, time is a limited resource. Timeful, the intelligent, personal, 'time assistant' app created by Dan Ariely shows people how to combine their calendar and to-do lists most effectively.

GM is releasing a free app called HUDWAY that turns a car's windscreen into a heads-up display (HUD). Just enter the location, set the iPhone on the dashboard, and HUDWAY projects turn-by-turn directions and outlines of the road.

Starbucks is set to launch its first major augmented reality app. Customers in the US who point their iPhone or Android devices at the chain's holiday cups will see animations featuring Christmas-related characters that they can interact with.

Johnson & Johnson has introduced an augmented reality app that projects images of the Muppets onto their Band Aid bandages. The iOS-based app, co-developed by JWT, can prompt a song from Kermit the Frog, a red carpet entry by Miss Piggy or a "daring act of lunacy" from Gonzo.