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 expenses
2) Cash On Cash return=Cashflow x 12 / Initial Investment
3) Cap Rate=Annual NOI/Purchase Price
4) ROI According to future value

You will also have a summary that calculates:
1) Operating expenses
2) Total expenses
3) Initial capital that I need in cash for the purchase
4) Monthly NOI
5) Future value