Maybe take calendar out of your name then as it's one of the top results when you search "calendar" ZERO STARS! This has to be a joke. This "calendar" app only adds the calendars that you already have such as Google calendar. You can unselect those but cannot log into other calendars. They have this connection service to connect to other things but that makes you sign up for another service. How this is editors choice is insane, I assume you paid them off cuz that's the only logical explanation.