I am trying to figure out the least expensive iOS device that can handle both the BARD library app and the Kindle app. My uncle, who is both blind and mostly deaf and who generally has resisted devices newer than the iPod Shuffle recently expressed an interest in the accessibility of Kindle books and was also intrigued when I told him that my iPhone also could be used to play books from the NLS via the BARD app. He is not interested in getting a phone and his budget is quite limited, I am hoping that if we can find a device that is inexpensive enough my mother and I could chip in to help him get it. I know the basics of the variety of devices in Apple's lineup, but I don't know which one's are too far out of date to run a recent enough version of iOS to do the job. Any advice greatly appreciated.