Yes. If you are on a monthly plan, you can cancel your subscription at any time.
There are no penalty fees for cancelling a subscription.
Keep in mind, there are no refunds for charges that have already been put through
(e.g. if your subscription gets charged on the 1st of every month and you decide to cancel on the 2nd of the month, you will still be allowed access for the remainder of that month and your access to the WISK platform will end the following the month).