"The apps for both of these companies offer features other than just purchasing options, such as inventory checks, rewards, and look books.Customer Engagement of Brick-and-Mortar Mobile Shopping Apps, 2013(Photo: http://photos.prnewswire.com/prnh/20140107/SF40289-a) Source: MobidiaThe impact of app quality and experience is also apparent when engagement is reviewed on an OS basis." . . . .