But, they may show some wrong data if the calendar you actually use, your calendar on mac, is not correctly synced with your Google calendar. Some of them let you share your availability with customers, co-workers or friends. It is the case for some calendar applications, some scheduling software or some meeting tools.įor these applications, your Google calendar needs to be up-to-date. Today, a lot of great applications ask you to log in with Google and ask for an access permission to Google calendar. It can be very useful to make your Google calendar default on mac. Make your Google calendar as default on mac, necessary to use some apps It is because your Google calendar is not your default calendar on mac. In this case, when you schedule a meeting from your calendar on mac, your event may not appear in your Google calendar account. A lot of people use a Google account for their emails (Gmail or a Google for work account) and the iCal calendar (Apple) application on Mac.