TruRank is a free Chrome add-on developed by Zen Arbitrage that aims to provide users with accurate information about a book's demand on Amazon. This tool displays the 12-month average Amazon sales rank directly below each book and on every Amazon product page.

With TruRank, users can make more informed decisions when it comes to buying or selling books on Amazon. By having access to the book's true demand, users can gauge its popularity and potential profitability. This information is particularly valuable for individuals involved in book arbitrage or those looking to optimize their book-selling business.

The add-on seamlessly integrates with Amazon, making it easy to access the sales rank information without any extra steps. TruRank's user-friendly interface and straightforward functionality make it accessible to both novice and experienced book sellers.

TruRank is a handy tool for anyone interested in understanding the true demand of books on Amazon. With its reliable sales rank data, users can make better decisions when it comes to buying and selling books online.