All our apps that support calendar views work directly with the iOS Calendar app to access and display your calendar events.  Our apps depend on the iOS Calendar app itself to sync all the events from all your calendars.  As a result, for your Outlook calendar events to be visible in our apps your Outlook calendar must be included in the iOS Calendar app first.

All our apps that support contact information work directly with the iOS Contacts app to access and display your contacts. Our apps depend on the iOS Contacts app itself to sync all the contacts from your contacts sources. As a result, for your Outlook contacts to be made accessible to our app your Outlook contacts must be made accessible to the iOS Contacts app first.

More information at:  Giving the app permissions.  Integration with the iOS Calendar app.