GMB Everywhere appears to be a legitimate tool for local SEO and Google Business Profile audits. It has received positive reviews from users, with many praising its usefulness and ease of use. The tool is available as a Chrome extension and offers features such as category finding, review audits, post audits, and competitor analysis. Users have reported that it helps in optimizing their Google Business Profiles and improving their rankings. The overall rating is 4.9 out of 5 based on 60 reviews.