Bah-Soo Attendance Calculator allows users to record, select or punch clock in time when entering Bah-Soo, then it’ll show clock out time and overtime. By simply inputting the clock in time, users can decide when to get off according to the app. What’s valuable about the app is that it also logs time in Kanda, and computes overtime besides Kanda. The original attendance record system doesn’t record time in Kanda immediately, so it’s difficult to calculate clock off time precisely. To earn every second, it's really useful to use the app to record attendance and calculate clock out time.