Each item is assigned to a category to help organize the list. Like list types, the categories are just names, so you can use anything you like. We've provided a few samples, and you can use them, ignore them, or even delete them.
If you would prefer a simpler user experience, you can disable the use of categories entirely using the
Settings screen accessible from the main screen using the

button. When you do this, all mention of categories will disappear from the App, other than the control in the
Settings screen.