Book Track is an attractive, customizable, engaging database app for tracking your book collection that has obviously been lovingly crafted. It works very well for a 1,000-book library, with a few shortcomings that put it just short of five stars. Pros include the app's aesthetics (highly colorful), ease of use and customizability. It does a good job finding titles by ISBN, and allows you to search for and insert the book cover that's actually in your collection. It offers practical sorting options. Syncing with iCloud is flawless. Looking through your book collection, once you've done the work of inputting it, is pleasing and fun.Cons (nits): The number one missing function is an option to ignore prefixes such as "a," "an" and "the" in sorted titles; otherwise big chunks of books end up clustered at both ends your collection. The full book list needs a column of small sort letters off to one side to quickly access books sorted by alpha -- otherwise you're endlessly scrolling through your entire collection. Book Track starts in 3/4-screen mode on the MacBook, so you have to full screen it each time you open the app (which is a bother). The app requires three tags for location, when one might suffice (e.g., sometimes a book is in a storeroom, not a storeroom, a bookcase and a shelf within that bookcase). "Hard cover" and "Paperback" should be among the main choices, in addition to "Paper book" and "Digital book." Scrolling is a bit kludgy on a MacBook Pro M1 Max. Would be good to have optional, user-directed fields that don't work well as tags -- e.g., purchase price. Cost of the Mac app is a tad on the high side. The release date needs the option to just show the year. Again, though, these are nits; in general I found Book Track to be a delight to use. A tip of the hat to Simone for putting together something unique and interesting.