Make sure you make a good real estate investment. Get this app and easily calculate if buying a home to put it up for rent is economically a good investment.Enter the expenses and income and this calculator gives you 4 financial ratios that will tell you if it is a good acquisition:1) Cashflow=Gross income - total expenses2) Cash On Cash return=Cashflow x 12 / Initial Investment3) Cap Rate=Annual NOI/Purchase Price4) ROI According to future valueYou will also have a summary that calculates:1) Operating expenses2) Total expenses3) Initial capital that I need in cash for the purchase4) Monthly NOI5) Future value