If you don't want to mess around with settings on your iPhone too much, you can install Microsoft's Outlook app for iPhone in order to sync your calendar. The Easy Way: Install the Outlook App for iPhone If you're wondering how to sync an Outlook calendar with your iPhone, we'll explain everything you need to know below. Many workplaces use Outlook and Exchange for this. You have shared calendar items, meetings, invites, and much more to juggle. You may even just use a plain old reliable paper calendar that hangs on the wall.įor work, though, a calendar generally needs to do more. For your personal calendar, you might use Google Calendar or a similar online calendar like iCloud. Chances are that you keep two different types of calendars.