This tool help you to backup and restore your calendar entries. It can export you calendar entries as ICS / iCal file. This file format is widely used in many different calendar applications, so that you can import the file from this app, or other calendar applications. It is also a calendar managment tool. You can backup / change color / rename / clear / delete your calendar storage. It is a lifesaver for someone have calendar synchronization problem, or use local calendars.