This is an easy-to-use HR application that allows employers to manage leave for individual employees, or allows users who are employees to track their leave taken and future leave. Whether users get the same or different amount of annual leave each year, the application helps users calculate their current leave balance and the leave balance as of a specific date, and the application can also automatically deduct the leave taken from the leave balance. Thus, it helps users to plan their vacation, mark their vacation since they started working, whether it is full-day or half-day leave, both types can be clearly marked down, as well as calculate the amount of holiday left to be cashed out or liquidated at the end of the fiscal year or when they resign.