A free program for Android, by The Math Factory.
Ganit Prakash-IX is a free application to help you learn and understand mathematics better. The solution to each problem is provided in detail, along with the required steps to solve it.
For instance, the solution to the problem of finding the area of a triangle is given in detail. The steps required to solve the problem are also provided.
In addition, each chapter is supported by the solution, so that you can grasp the concepts easily and efficiently.
In this application, the concepts are presented in a very simple and easy to understand format. Each chapter is supported by diagrams, animations, and graphical solutions to help you better understand the concepts.