Free tools

Both are free, need no account, and answer a question the usual tools skip. They exist because we kept doing the same arithmetic by hand.

Ad budget calculator

What a budget buys on each channel — and whether it buys enough clicks to trust the result at all. Most calculators stop before that second part.

Backlink checker

Joins the links you have to the links that work: which have ever sent a real visitor, which never have, and which you did not know about.