CheckIn is a mobile-centric application designed for tracking and managing attendance, catering to startups, small businesses, medium enterprises, event organizers, and educational institutions. It enables swift report generation through email, downloadable Excel files, or advanced filtering options. Additionally, CheckIn offers a premium web version optimized for desktop browsers to facilitate attendance management. The app includes location tracking for each check-in and check-out entry, providing attendees with a dashboard to monitor their attendance records by date. To prevent unauthorized access, check-ins are restricted for attempts from unapproved locations. The app also boasts a flexible management system for attendees and employees, including a bulk upload feature. Attendees can check in using a fixed QR code with GPS verification, while administrators generate the QR codes and set the designated location using a mapping tool. Users log into the app with their credentials and scan the fixed QR code to record their attendance. This comprehensive system enhances both security and convenience for all users involved.