The best way to categorize your prayers is to use our hashtag feature! Type a hashtag (#) anywhere in a prayer's title or description, and you've instantly categorized it.
When praying, you can select one or more tags in the Prayer List (the icon in the lower left), and you can pray for just those categories.
You can also set up reminders for tags. When you receive a prayer reminder notification, simply swipe and you'll be praying for just that category.