Is there a free trial?

Yes, there is a 30 day free trial.

Why am I asked to select a plan during the free trial?

To avoid any interruption to syncing at the end of the trial, we ask for a plan selection and credit card.  We never charge anything before the end of the free trial period.  If you want to cancel during the 30 days free trial period simply email and you will never be charged at all.