Apps make the mobile phone a real computer, and Apple's App Store has been a key factor in the phone's success.

应用程序使移动电话变成了一部真正的电脑，苹果的应用程序商店是iPhone成功的关键因素。

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"In-app advertising" should be another key element of any business model.

应用内嵌广告(in - app advertising)对于任何商业模式都应该是一个关键元素。

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That’s it as far as the app goes for looks; simplicity is the key word here, and that theme continues with the settings which are bound to only one screen.

这款应用程序的外观方面就是如此；简单化在此是关键词，这种风格延续到绑定在同一屏幕上的设置界面中。

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For example, its Windows 8 Start key provides a quick and easy way to get back to your Start Screen, while the App Switching function key allows you to quickly switch among your open apps.

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"The timing was right for this sort of product because people have become so used to their smartphones and using apps, that it was a natural extension they should have an app for the key as well, " Robertson says.

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App selection is another key area that BlackBerry must address.

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