LibCrawl

在你的口袋里有每一个公共图书馆。

This app is for connecting to any library’s online catalog easily from your phone, you can also scan in a book's isbn to see if your local library has that book. This app is almost completely compatible with all of the public libraries in the United States that have an online catalog. If it hasn't already been added it will email the developers and show you how many libraries are ahead of yours in the list, along with the time it was put on that list. Your library should be added within a few hours after downloading.