MatFin

MatFin is an APP that allows you to perform all the most common operations of Mathematical Finance:

The search for present value, future value, rate and duration under the regimes of simple interest, compound interest (exponential and linear annotation) and discount.
The Loan and Mortgage at constant or variable payments, including the search for payment amounts and the periodic rate, nominal, effective and APR.
The financial lease at constant or variable payments, including the search for payment amounts and the periodic rate, nominal, effective and APR.