I want to change the default category!

Category
Category

Set Default Category

You can change the default category that’s automatically selected when using Quick Add or Someday Tasks.
1.
In the Home, Calendar, or Archive tab, tap the Menu button.
2.
Tap Manage Categories.
3.
Tap the More button next to the category you want to set as default.
4.
In the category details screen, tap Set as Default Category.