AC Analytics is a free Chrome extension designed to improve the AtCoder experience for users by providing a suite of essential features. This tool enables users to track their own performance as well as that of others, making it easier to navigate the challenges presented on the AtCoder platform. Key functionalities include an activity calendar, submission history, and the ability to bookmark problems for later review.

In addition to tracking progress, AC Analytics offers insights into problems solved by rating, unsolved problems for skill improvement, and a problem set with filters to streamline problem discovery. Users can also benefit from daily reminders to maintain consistency in their practice. With these features, AC Analytics aims to foster a more engaging and productive environment for AtCoder users.