IMPORTANT NOTE: this article explains how to disable the app, it does not explain how to uninstall the app. When you disable the app, your subscription remains active. If you need to uninstall the app, check this article instead.
To disable the app, open the app and find the Settings > General section and click "Status":
Next, find the "Disable" button and click it.
To enable the app, go to the same section and click the "Enable" button.