Sunrise Calendar [review], a free iOS calendar alternative, has finally introduced long-expected support for Microsoft Exchange accounts for corporate calendars, making it on par with the stock iOS Calendar app.
Now available free in the App Store, this much-expected feature in the new Sunrise Calendar version 2.2 makes it easy to connect your Exchange account directly in the app to access your work-related tasks and events on the iPhone and iPad.
Support for Exchange accounts is in addition to the existing iCloud and Google calendar integration. Before linking your Exchange calendars with Sunrise, you must first add an Exchange account to your device in iOS Settings under Mail, Contacts, Calendars...