Here you will be able to see a breakdown of your current period usage, change the card your subscription is billed to, cancel your subscription, and see when your subscription period renews.
Please give us feedback and your specific requirements if the outputs don't satisfy them and we'll try to meet your criteria. We would be super sad to see you go but if you wish to cancel your subscription, you can do so in the Billing tab. Click the Cancel button located on the right of the Cancel subscription option and Confirm your choice at the pop up that will appear.
Regardless of when you decide to cancel, you will have access to the web app until the end of your subscription period.