Depends how you think of it.
I like this method as I know each of my bills and that they will be constant each month and my spending money will be a set amount each week. My bills do not fluctuate, except around April when prices rise and I have to adjust them. I’ve ensured they are all fixed, even utility bills. Why should I have to continuously check when I know how much my bills will cost? I can quote them all and the costs if needed. The app will warn me if I somehow have no money. In reality, will I check up on them? Of course but I don’t need to worry about them.
I just focus on spending my fixed budget per week on what I enjoy as well as saving the rest. This method got me out of debt and, over 6 years, to have savings over £20k towards my house deposit.