Tagus is a free application that is designed to help you to find out more information about a book that you have just read.

Tagus has a lot of advantages over other applications, such as the one you are using right now, because it does not require you to pay anything to use it. It is free, you do not have to pay anything, you can use it as much as you want.

Tagus allows you to mark the pages that you have marked in the book, so you can find them easily when you want to return to them.