Hello Matthew,
No, I'm afraid there is no calendar synch on the iPad version or the newer iPhone version. There have been discussions around getting a calendar view incorporated into the desktop version, though that currently allows you to synch with Tasks in Outlook.
If you need iOS calendar synch, your best option is to post a suggestion on the UserVoice site (which is linked from the MLO website support pages) and invite people on this forum to vote on it.
Stéphane