What is Best Seo Tool For Site Audit?

[appmonkey]

Hi.
I am Learning Seo.I found Almost All Seo Tools Are Paid.
What is Best Seo Tool For Website Audit In your Opinion?
I found Semrush and SiteBulb best but Both are paid.
i did not find crack version of sitebulb free..

 

[xibble]

Yoast SEO is pretty good because it has a free forever version

 

[RealPatrik]

Free versions of SEO tools offers you very limited functions. You'll probably realize later that you don't really need most of them and if you want do good SEO marketing, you need to pay.