A free app for Android, by Nilesh Harde.

How much money will I need to earn in order to reach my financial goals?

This tool will calculate the monthly investment you need to make in order to achieve the specified goal. It will take into account the value of your financial asset today, the number of years you have remaining, the rate of return you expect on your investment, and the inflation rate you expect.

You can give the goal present value, the number of years remaining, the rate of return, and the inflation rate. The tool will then calculate the future value of your goal and the amount of money you need to invest in order to achieve it.