MyCBSEguide is one of the few good apps that has truly helped both the teachers and the students. It contains each and every subjects of each class. The NCERT solutions and the videos alongwith previous years question papers prove to be extremely helpful for the students.
Solving the sample papers and the online tests prove to be a boon for the students.
As for the teachers, this app provides an excellent platform to work from their home.
I give a big thumps up for this app.