Add more customization options for the app's UI

Basically, the app is very simple and intuitive to use. However, as more functionality is added, it can become more complex to use because all the UI elements take up space.

To reduce the complexity, it might be useful to add more customization options to simplify the UI. Here are some examples:

• Customize the menu and tab bar items (for example, remove the Budgets tab if you don't use budgets).

• Hide certain areas of the transaction form

• ...