HCU Checker is a GPT that provides a specialized function in auditing web content for its alignment with Google's Helpful Content Update (HCU) criteria. This tool can be incredibly useful for website owners, SEO specialists, and content creators who aim to meet the updated Google ranking guidelines. The HCU Checker aims to help users understand how well their web content adheres to what Google considers to be 'helpful' to the user. More specifically, it aims at checking whether the website content is satisfying Google's E-A-T principles - Expertise, Authoritativeness, and Trustworthiness. This tool is not just an analyser, but also offers advice on how one can make their content more user-focused, thereby helping meet Google's people-first priority. It can provide valuable insights and suggestions on improving content's reliability and helpfulness for users. This way, HCU Checker helps create an action plan to enhance web page content and in turn, increase its chances of a better ranking in Google's search engine results.Employing the HCU Checker requires a ChatGPT Plus subscription - it's evident that it's designed to work as a 'GPT' or 'app' on top of OpenAI's ChatGPT. Users can interact and get assistance with prompt starters such as 'Can you analyze my website's alignment with Google's criteria?' or 'What improvements does my article need for E-E-A-T?'. While it brings value to any user investing in improving web content, it is particularly valuable for those focusing on organic growth strategies that rely on search engine optimization. HCU Checker serves as a handy solution for optimizing web content considering the continuous updates and evolution in Google's algorithms.