Can I sync with Google Calendar?

Yes, you can.

1. Open the "Settings" app on your device.
2. Tap "Accounts," then scroll down and select "Add Account."
3. Choose "Google," log in with the Google account you want to use, and enable the calendar option.

Once this is done, open the Simple Calendar app. In the settings, go to "Show/Hide Calendars," and you will see your Google Calendar listed. Turn it on to display it in the app.