CorrectEnglish comes from Vantage Labs, a US developer based in New Hope, Pennsylvania, and it behaves like a full writing assistant rather than a one-off checker. The extension watches the fields you type in across the web and provides spelling and grammar feedback inline, so problems surface while you are still composing instead of in a separate checking screen.
Beyond basic correction, the extension layers in word suggestions and writing guides. That mix suits people who need more than a typo sweep — for instance, someone tightening the tone of a client e-mail or rewriting a sentence that reads clumsily. The developer's stated goal is to give writers the support to work online with confidence and accuracy.
The extension is offered by Vantage Labs and carries Chrome's "follows recommended practices" badge, which reflects a baseline of privacy and security hygiene. It notes in-app purchases, which fits a freemium structure where an entry level is available and fuller capability sits behind payment. The listing itself does not publish detailed plan prices, so check the vendor's own site for current tiers.