This is a nice little app which I *would* choose to use without hesitation...BUT...you are unable to either amend the 'Genre' categories OR add your own. This is very limiting when it comes to sorting. Anyone with a sizeable book collection will no doubt have particular, often esoteric interests, and their library will reflect this - but 'Books 3.0a8' won't. For example, I have a large poetry collection but am unable to sub-categorise the corresponding entries,(i.e modern/french/irish/american), but have to lump them under the pre-defined, vague "Poetry" heading. A glaring omission which may not seem much but is certainly making this user look to other products (& it's one I don't mind paying for either, so shareware it is).