Small library-Debit management

Whether you are a librarian or a reading enthusiast, I believe that you will have a lot of books, so do you have to borrow books to your friends?
If it is a small amount, if you have more books borrowed by friends, can you remember to live?
This tool will be your helper:
You can record the inventory of the book on your phone;
You can also record the information of the borrower, as well as the time of the loan, the time of return, etc.
View the borrowing history and let you know the flow of each book.