I usually have about 20+ books in my open reading queue at any given time, on various formats and devices, from paperbacks to eBooks and PDFs. There are entire collections I intend to read thoroughly and completely in my lifetime, like the European classics and the Western Canon, and then there are other books which I quickly pick up and discard or peruse for value (like Tyler Cowen's method of reading fast)[1].I would like a simple app or workflow to keep track of reading progress across all my books. Maybe academic papers and articles as well. It should offer quick progress percentages at a glance, perhaps even an iOS widget, and be quick to input new books and update reading progress.I've tried the iOS apps " " and Bookly, currently using ReadingList.app and am pretty happy, but would love to hear what you guys are using.[1] 