I have used Semrush and Ahrefs previously. Both tools costed alot per month. But writerzen came with the good deal on appsumo. I am using writerzeb with appsumo deal and getting the keyword research done. Writerzer academy is teaching the concepts also Review collected by and hosted on G2.com.

The level of work that we see on Ahrefs and Semrush is all toghether a different level. In case of writerzen that is not so polished. One feature that I like in Semrush is the easy ranking keyords with KD score. That KD score is missing in writerzen. Here it is Golden Keywords filter. Learning path on writerzen is big. Review collected by and hosted on G2.com.