Responses are stored forever unless you delete them explicitly from the dashboard. All the responses of your WhatsForm are stored in your account forever. You can access the data anytime you want to in the dashboard. You can export them from the dashboard whenever you choose to.

Note

There is a limit to how long files uploaded via the File upload question, will be available. It will be stored for 1 year on the dashboard. After one year, the files will be permanently deleted from your account.