Brilliant - the best there is!! I've tried several book cataloguing apps to track books I've read and this is the best I've ever found! Easy to use with excellent help tips for first users. Far too many features and functions to list them all  but adding  sorting  customisation are extensive  well designed and easy to use. Love the fact I won't lose data painstakingly entered  as I can sync with Goodreads  export to csv  and back up to SD card. Only issues I've faced so far are related to Goodreads  not this app! :) Anyone who's a keen reader or who has a book collection they want to catalogue will love Book Catalogue. And I'm sure you'll also think  like I do  that it's well worth making a donation to support the developers!! They can't earn anything through Google Play for their wonderful work  because they're Australian.
April 24 2014