It doesnt apply to me anymore but i can imagine this is a good feature for many people.
The idea: open a new account just for budgets. Set a weekly budget, for example 100 euro and see how mich you have spend of it, see image.
In a way similar to a savings account, but this is focused on budgets.
An additional feature would be an estimation of how much money you are gonna spend so you know if you are on track or not.