Oh, fair enough, my bad. Even so, syncing with which calendars? Likely Google and Outlook, which means you probably still use Gmail or Outlook. I'm not saying

Oh, fair enough, my bad. Even so, syncing with which calendars? Likely Google and Outlook, which means you probably still use Gmail or Outlook. I'm not saying there's no good argument for an open-source option being available, or that one wouldn't do well, I'm just saying that I don't understand why there should be any expectation that an operating system developer should also be expected to create and update apps like those.