SanDisk's iXpand is a dual-pronged memory drive with a Lighting connector on one end and a USB interface on the other. It's designed to solve two problems: the first is the alleged difficulty in getting photos off your iPhone or iPad; the second is iOS devices' lack of expandable storage.
Easy to use; Plays back almost any media file; Clean and simple app
Bulky; No USB 3.0; Apple's ecosystem limits what the iXpand can actually back-up