A free program for Android, by BOOKSHELF.
This app provides solutions of all chapters and exercises of the NCERT class 6th CBSE mathematics textbook. It is designed to be used offline, so you don't need to worry about internet connection.
This app is very easy to use, you just have to know the chapter and exercise number to find the solution. It is designed in a simple and clean way, with a very nice and beautiful interface, so you don't need to waste your time looking for solutions.
This app is designed to be used by students and teachers, so it is really helpful for both of them. Teachers can use this app to help them with the NCERT class 6th mathematics textbook, and students can use it to find solutions to the chapters they are studying.