But a slick interface is only part of achieving ease of use, argues Mr Hertzfeld.

ECONOMIST: Open sesame

Instead, the startup has wooed users with a slick interface and free features like data backups and find-my-phone tools.

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Its own mobile apps are clunky, in marked contrast to Instagram's slick interface.

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Of course it was important for iJukebox to build a slick interface and features but the real challenge was in licensing recorded music, publishing, and performance rights and implementing a transactional system that is painless for users.

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Software from another Google acquisition, Skia, will put a slick user interface on the package.

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MOG's free service takes advantage of its recently unveiled HTML5 web application, which comes out of beta today, featuring a slick new interface and advanced features such as integration with Facebook for personalized recommendations.

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Despite the slick real-time 3D interface, Play says that the software doesn't require a 3D graphics card.

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