Do you have e.g. an Exchange work calendar that you would like to also see in your personal Google Calendar account? So that you can see it together with your personal events or share it with your family? Then just create a new calendar in your Google Calendar account and use this app to copy the Exchange calendar into that new empty calendar in your Google account. SyncCal can copy all events from one calendar into another and keep them synced. I.e. it will ERASE all events in the target calen