Account Deletion:
You can delete your account directly from the dashboard, on the Account Details page.
Please note that if you delete your account, you can no longer push new data or search your indices. If you want to keep your indices online, you must ensure their usage falls within the free usage units we offer.
Application Deletion:
You can delete your pay-as-you-go application(s) at any time by navigating to "Settings" > "Applications", then clicking the three-dot icon on the right of the application and selecting 'Delete'.