This is must download app if you are facing any problem.
All the totke are explained in simple hindi language.
Free & Offline app.
In this app you will also get MCQ to check how much you have learn.

some special features of this app are-
1)you can learn with the help of mcq
each mcq test show you the result
3)increase speed feature helps you to test your speed how much you learn
4)game play- if you score more thab 60% then you can go to another level.