This site/app is the most helping app for students including me a student can findi anything related to his course and its is a good way to prepare for exams as this site also provide you important notes of every subject of every class. You can also get sample papers and previous year question papers on this app and also ncert solution, you can ask any question directly from experts and app allows you to download your paper or solutions in pdf in order to view it offline so I recommend all the students to download my cbse app in your phone and enjoy your study