Corrector App is a free grammar checker created by Grammar Buddies LTD. Corrector App is a free grammar checker created by Grammar Buddies LTD. With this free tool, you can check the grammar of your homework, e-mails or presentations before handing them in. Corrector App is available without download in a web-based version or can be downloaded on iOS, Android, Chrome, Firefox, Windows and Kindle. Did you know that as much as 40% of all communication is non-verbal? This means that how you communicate and write greatly affects how others perceive you. It can even be the difference between getting your dream job or not! Consequently, if your writing has grammatical errors, spelling mistakes, and misspellings—it will hinder your chances of landing that perfect position. But don't get disheartened—today, we have the Corrector App free grammar checker tool that will improve your writing and help you stand out from the crowd!