$19 once. No subscription, no account, no renewal.
Everything on the home page: all six formulas, the consensus grade, longest sentences, passive voice, jargon with plainer alternatives, and highlight-on-page. That is not a trial. It does not expire.
Your licence key is emailed to the address you use at checkout. Paste it into the extension once and it is remembered.
PlainCheck has no server, which means licence keys are checked offline, inside the extension. The consequence is that a determined person could work out how to generate a key without paying. We are telling you that rather than implying a protection that does not exist — it is the unavoidable trade for “no account, no server, no tracking”, which is the actual product.
If you find PlainCheck useful, paying for Pro is what keeps it maintained.
If Pro does not do what this page says, email dan.cohen@defimagic.io and you will get your money back. No argument, no form.