RacoonDR

RacoonDR watches one number, the Ahrefs Domain Rating of a site you own, and keeps the history so a month of link building can be told apart from a quiet one. A check needs no account. Every domain checked gets a public page with a chart, a global rank and the domain age, and the badge is the business model rather than a decoration: display it and the link on that page turns followed, or pay to skip it. What it does not do is the research, so anybody who needs the keyword and backlink data itself still needs the tool the number comes from.

Free is $0 with no card and no expiry: domains tracked without a cap, a scan every 24 hours, a public page with the full history and a weekly email. Pro is $5.99 a month, or $4.49 a month billed yearly at $53.91. Neither plan sells tracking, which is uncapped on both. What the money buys is going without the badge: Free allows three such domains and their links stay nofollow, Pro allows fifteen and theirs are followed, with more at 40 cents a link to a maximum of a hundred.

Somebody who wants to watch a site's Domain Rating move month to month without paying for the suite that publishes the number, and who does not mind carrying a badge for it. Anybody doing keyword research or auditing a backlink profile needs the full tool instead.