The 'Peso a Peso' app is designed to help users manage their daily budget, with a particular focus on everyday expenses. This tool distinguishes between fixed expenses, which occur once per period—such as rent, mortgage, and utility payments—and variable expenses.
The application uses an economic projection model based on a linear approximation to forecast the balance at the end of the period. It assumes that fixed expenses already incurred will not be repeated, and offers an estimate of how much money the user can spend each day to reach their established savings goal.