A cancellation policy for a web application outlines the rules and procedures that users need to follow if they wish to cancel their subscription or usage of the application. As with refund policies, cancellation policies can vary depending on the application and company. Here's a general overview of what a typical web application cancellation policy might include:

1. Cancellation Process: Explain how customers can initiate the cancellation process. This could involve accessing their account settings, contacting customer support, or using a dedicated cancellation request form.

2. Timeframe for Cancellation: Specify the timeframe within which customers need to cancel their subscription to avoid being charged for the next billing cycle. This could be a certain number of days before the renewal date.

3. Refunds for Cancellations: Clarify whether cancellations are eligible for refunds, especially if the customer is canceling before the end of a paid period.

4. Partial Cancellations: Explain if partial cancellations are possible, where customers can cancel specific features or services within their subscription while keeping others.

5. Effect of Cancellation: Detail what happens to the user's access and data once the cancellation is processed. For instance, do they lose access immediately or at the end of the current billing period?

6. Subscription Changes: If applicable, mention whether customers can change their subscription plan or downgrade to a lower-tier plan instead of canceling.

7. Notification of Cancellation: Specify how users will be notified once their cancellation request is successfully processed.

8. Termination for Violations: Indicate if the company reserves the right to terminate a user's subscription without a refund in case of violations of terms of use or abuse of the application.

9. Billing Disputes: Explain the process for handling billing disputes related to cancellations, including how customers can address issues with charges.

10. Policy Changes: Like with refund policies, reserve the right to update or modify the cancellation policy and specify how customers will be informed of such changes.

11. Contact Information: Provide clear contact information for customer support or the relevant department where users can inquire about cancellations or seek assistance.

Ensure that your cancellation policy is written in clear and understandable language, and that it aligns with any relevant laws or regulations. Transparency is key, and customers should be able to easily find and understand how to cancel their subscription if they choose to do so.