Interest Calculator is a finance calculator app that calculates the present worth, future value, required interest rate, and investment period of an investment, whether it is a single deposit, a number of equal deposits (Uniform Series), or a number of varying deposits (Arithmetic Gradient and Geometric Gradient series). Each calculation can be performed based on simple interest, compound interest, or continuous compounding.

The app includes a comprehensive help system with detailed descriptions of each calculation, as well as examples.

The app includes the following calculations:

• Present Worth - the amount that must be deposited today in order to receive the same amount in the future.