In this image released by Toronto-based 2 For Life Media Inc. on Thursday March 24, 2011, its iPad royal wedding app that lets users share marriage advice and wedding tips to the royal couple through a virtual guestbook. More than a dozen smartphone apps are offering to bring fans everything royal wedding-related wherever they are -- so they can check the days and minutes until Prince William and Kate Middleton's April 29 wedding. (AP Photo/HO 2 For Life Media Inc)

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In this image released by Toronto-based 2 For Life Media Inc. on Thursday March 24, 2011, its iPad royal wedding app that lets users share marriage advice and wedding tips to the royal couple through a virtual guestbook. More than a dozen smartphone apps are offering to bring fans everything royal wedding-related wherever they are -- so they can check the days and minutes until Prince William and Kate Middleton's April 29 wedding. (AP Photo/HO 2 For Life Media Inc)