Ahrefs

Ahrefs' Domain Rating and Moz's Domain Authority disagree because they measure different things. What each score actually counts, and which to use for what.

SE Ranking costs roughly half of Ahrefs. Where that saving is invisible, where it hurts, and which one fits a founder doing their own SEO.

A cost-first look at the two big SEO subscriptions: how Ahrefs' credits model and Semrush's flat fee behave differently on a small budget, what long-time users say their bills grew into, and when a founder should not be paying for either yet.

A vendor quotes you a DR 55 placement. Here is the check that tells you whether that number came from real links or from a network built to inflate it, and which tool surfaces which half of the answer.