Coverdoc.ai is an AI-powered tool that helps users generate personalized cover letters for job applications. It saves time by eliminating inconsistencies in writing styles, detects and corrects grammar mistakes, and provides company insights to add relevance to the cover letter. The tool generates the first draft of the cover letter within three minutes and allows users to edit and refine the document before submitting it. Users can provide feedback through a survey link found in the email or Google doc. The app offers a free plan with limited features and also has paid subscriptions with advanced personalization features.