In the real estate market, a housing and mortgage app might be combined with a calendar app and a simple UC presence click-to-connect feature.

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Once you install Xsync on your iPhone, you select an audio file, photo, video, contact, or calendar appointment, each of which is represented by a simple icon.

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"It is operated by a single push button and could not be more simple: one push to display the time, two for the calendar day and three for the seconds, " says designer Marco Biegert.

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