CLOSE, but needs work.

I use another inventory app for DVDs (My Movies 2-- excellent!) and this seemed to have all of the desired (similar) features to catalog my books. I paid for the "pro" version to unlock the desirable features (virtually all necessary to make the app even useful). Imagine my surprise when I found that few work properly.
I did a test with 50 books. The scanner did not recognize 19 of them. I constantly got a message stating the barcode "may not be unique to this book" (which seems unlikely, as it is my understanding that all UPC barcodes are unique) and I needed to enter the ISBN manually. (There is no way to add letters, which some ISBNs include, unless you go back to the main add menu and re-select "Manual ISBN.") Even at that, some were still not recognized, so I had to use the "Database Search." This also failed for several, so I had to manually enter info. In some cases even when a title was recognized, vital info (like author) was missing, requiring me to manually add it to be able to save. (There is no provision for adding an Editor rather than author for compilations and such.) Titles of many pre-barcode editions of books, even well known classics, frequently dont come up in a search.
"Bulk Camera Scan," one of the main reasons I paid to upgrade, is virtually useless. Yes, it will scan batches, but frequently attempts to scan an item twice immediately, and gives you error messages stating "Title is already in your library." Even worse, in cases where the barcode "may not be unique" it doesnt bother to let you know that, and simply adds something random, rather than the correct title, to your library. Of course, there is no way to determine this unless you go through the entire library to find erroneous and missing titles, as there is no way to check prior to batch save.
Either the app doesnt recognize barcodes/ISBNs/titles properly or the database is extremely poor. Possibly both.
If the features in this app worked as advertised it would be convenient, nicely laid out and easy to use. As it stands, I cannot risk entering any more books. I have a library of thousands, and without a functioning bulk scan (not to mention searches and manual entries of potentially 40% of my books, based on my test group) it would take weeks if not months to create a workable inventory. If the problems get fixed, well see. If you have a small library, or dont mind entering half of your titles manually, then this app might be fine. If you have a serious library and need an accurate, easily entered inventory, this just doesnt cut it. Close, but no cigar.

JestMaster about iCollect Books: Library List, v5.9.5