Absolutely not. Cora is a fantastic and powerful tool and even though we developed Page Optimizer Pro, we still use Cora in our client side work. We use Cora to look at “the other things” that are not considered (nor ever will be considered) by Page Optimizer Pro. In our opinion, Page Optimizer Pro is where you might want to start, especially when evaluating a page for the first time or if you are in the content development phase. Once you are committed to optimization for a particular keyword, Cora will provide invaluable knowledge and insight that is outside the scope of Page Optimizer Pro.