Getbud is the simplest budget application ever.
Just tell the app how much you want to spend (or save), then as you add your incomes and expenses, the app shows your progress so you can keep track of how much money you have left.
Everything done made manually. Add your income(s) and expenses, and reset when you want to.
NOTE:
This application isnt for those who want to track every expense. There are lots of apps that for that, and I understand those who want to track everything, but this is just a very simple app that helps you stay on track with your spending.