KDSpy is a power tool for authors. It was designed for Kindle authors, but any author can benefit. If you want to publish a book for the pleasure of seeing your name in print, you won’t need this tool. But, if you want to earn passive income by selling books, particularly on Kindle, this tool can be a life-saver. What books should you publish for income? The answer is obvious: books that people want to buy. How do you find out what books people want to buy? Spy on the current Kindle sales data to see what is selling. That’s whatKDSpy does for you, far better than you could do it for... [...]