When you subscribe to the paid plan, you can either choose the monthly or annual subscription. Monthly subscription is automatically renewed each month. You can cancel it anytime. Annual subscription is a 12 month commitment and it is non-refundable. If you need it just for 1 month, then you can choose the monthly plan, use it for 1 month and then cancel the subscription before it is renewed for the 2nd month. When you cancel your subscription, it will be valid till the end of the subscription period.