Does exactly what I wanted! Have stacks of 2nd hand books  and needed a catalogue to stop buying duplicates. The look-up series/author is also great for filling series gaps you've only found through the catalogue. Have recently found that using Google Googles as the barcode scanner no longer seems to work  perhaps due to recent move to Android 7-1-1? A shame  as have been using the app for over 2 years and scanned nearly 2k books into my collection! Changed to using Zxing scanner  and works perfectly again.
December 30 2016