The 'すごい！！残機確認' is a Chrome extension designed to assist students in managing their attendance efficiently. This free add-on calculates the remaining number of absences allowed based on class schedules, attendance records, and tardiness. It takes into account the attendance rate required for credit approval, making it a valuable tool for students who need to keep track of their attendance limits.

The extension operates directly on the ECC student portal's attendance management page, providing visual results instantly. Users simply click the extension icon to trigger calculations based on the information present on the page. Importantly, this tool runs entirely within the local environment, ensuring user privacy by not collecting or sharing any data externally. Note that it is specifically designed for ECC students and will not function on other websites.