Mathway - Math Problem Solver - This app at first glance may seem like a calculator, and so it is. However, it is not the usual calculator, it will be possible not only to solve the most complex mathematical equation in which many variables, but you can also build a chart! Based on your equation, the application itself will make up the schedule and displays it to you on the screen. It's just indispensable if you are a student and not really understand maths.