As above, we used to track our spending, but not to manage budgets as it wasn't really needed. Libre Office was also used here (free version of Excel - there, that's saved you £120 already
).
I also used it to see if we could afford to retire, or more accurately to prove to MrsF that we could afford for ME to retire.
Columns for different items, 1 row for each month. The important thing is to record things regularly, not try and go back through piles of receipts as things get confusing. So does that receipt for petrol from Devon go under Car or Holiday, that receipt from Calais, was that holiday, or were we stocking up on wine so it goes under "food", etc etc.
We were already saving heavily, but it was good to see how much 'discretionary spend' we were making, how much was being spend slowly doing the garden/house up, etc. One thing it showed was how little we actually needed to live on, and where we could have saved should we have wanted to.
I also have a separate sheet with our savings and assets on, this is updated every few months with more recent values.
However it israther time consuming, I'm sure there are Apps and stuff available, but as I don't have a smartphone (there's another £150 saved!) I don't know.
The thing about Budgetting, is that once you set one don't let it become a target rather than a cap. In the old days all my bills were on DD, and I used to take £50 out of the bank every sat morning to do my shopping and last the week for lunches etc. If there was anything left on Friday night then it disappeared down the pub. This worked OK, as the £50 was much less than I had available each week and the month end leftovers went into the holiday/luxuries fund, but I never actually saved anything for the long term until my Dad opened a PEP for me and I added monthly.
These days I would find this much harder, as it is simply far more conveneint to tap-tap-tap. I went for a weekend with some mates over the summer and the number of purchases at the bar were quite a surprise when I got home, probably 50% over what I'd expected. Then there was the car park somewhere, a couple of lunches, coffee and cake somewhere, etc. When you had a pocket of paper this sort of thing was easier to keep track of, and I suspect is where most people overspend.
I expect there's an App that shows a running total on your phone though.
Paul