Yes — every account starts free with 500 pageviews and no card, running the full detection engine. Once you’ve spent the free allotment you pick a plan to keep going, and you can also buy a paid plan up front at any time. Card checkout runs through DodoPayments and your plan activates as soon as the payment clears. Plans are month-to-month, and you can change tiers at any time.

A pageview is one load of a page where the PubSentry tag fires — the same unit your ad reports use. We count loads, not visitors and not ad impressions, so the number maps cleanly to your traffic analytics. Blocked invalid loads still count against the meter (we did the work of scoring them), but they’re a tiny fraction of legitimate traffic and they’re exactly what you’re paying us to catch.

Yes. Plans are month-to-month with no lock-in — upgrade, downgrade or cancel whenever you like, effective at the end of the current cycle. If you outgrow your pageview ceiling mid-month we’ll flag it in the dashboard and never silently stop protecting you; your traffic keeps being scored while you decide to move up.

Blocking a real human is the worst failure we can make, so we engineer against it before anything else. Defaults are conservative, a calibration gate asserts zero false-positives on a human test corpus, and every new rule shows its retroactive blast radius before it goes live. We never claim “100% detection” — sophisticated residential-IP bots are caught at a low rate today, by design, and we close that gap with the reputation network and ML rather than by getting aggressive on real traffic. The one number we hold to is FPR = 0.

One async tag, ad-network-agnostic. PubSentry suppresses ads on a block across Google GPT, AdSense, Amazon apstag and Prebid, with a universal MutationObserver fallback for everything else. There’s no WordPress plugin or SDK to install — just one <script> tag that’s under 15 KB and fails open, so it never delays or breaks an ad.