Clearly no one has been able to produce a good user interface or a way to target customers on the go.

FORBES: Move up http://i.forbesimg.com t Move down

Burpple has created some nifty app interface designs and good designs define its personality.

FORBES: Singapore Startup Burpple App Update: Explore Over 150,000 Food Moments From 3,300 Cities

Dodsworth has been lucky, though, because Twitter has yet to introduce a particularly good user-interface product.

FORBES: TweetDeck's Dreams Beyond Twitter

Apart from its superb screen and intuitive interface, Apple iPhone has matured a good deal over the past year.

ECONOMIST: The competition this time will be a lot stiffer

Before we even managed to download the app, we had a pretty good idea in our heads as to what it would look like: lately Google has been favoring a minimalist user interface across the board, which means Android and iOS users should be able to find their way around Google services without experiencing the hazards of a learning curve.

ENGADGET: Google Drive for iOS hands-on Mobile