Each Honeydue account comes with 17 pre-configured categories that cover common things like "Food & Drinks", or "Salary & Wages". You can edit their name, icon or color by tapping on any category then tap on "Options" -> "Edit Category".

If you want more granular control of your spending habits, you and your partner can also create custom categories. To do that, tap "Budget" on the bottom navigation bar, then tap "Add" on top right corner.