Hell ya. it's a subscription service. If at any time you are not satisfied (which I'd be upset, but willing to concede that it didn't work out for your needs).
Simply log into your dashboard (it's automatic on login), click 'my account' at the top left. Then scroll down to 'subscriptions', find your subscription and hit 'cancel'.
No harm no foul. You will have the remainder of the month paid for and the following month your account will cease to function.
If you have a yearly subscription, you will be paid in full to end of year after which your subscription will auto terminate. If you would like to prorate your membership, please email us.