I use YNAB (you need a budget) it’s not free but it’s GREAT for setting savings goals, paying back debt, etc.
It’s also flexible if you need to break your budget for some reason. You can pull from another bucket easily (gas bill is high, pull from emergency savings or cut from gaming), or just overspend and it goes on a report to keep track and plan better.
The best part is peace of mind on big bills - when it comes time to pay taxes or pay for my 6mo car insurance I’ve already been saving 1/12 or 1/6 of that total every month leading up to it. I can put everything in auto pay and never have to worry about the money being there.