Go to https://marketplace.zoom.us/user/installed and click Manage > Installed Apps > and click Uninstall next to the Grain application.

Please see this Zoom Support page for additional details.

To keep all of your recordings in Grain, make sure to select "Grant App developer consent to retain data" but if you uninstall Grain without checking that box we will delete your account and all associated notes and recording data within 10 days.

*Note: Grain is no longer required to delete all of the Zoom data from our accounts if you disconnect your account from Zoom*