This app is mainly for students who are prepairing for competative exams( jee mains/advance, neet, aims)
Advantages: Easily assiable both website and the app and lot of online leacture and teachers available almost all the time , doubts can cleared by students and they can even ask and question that is with in their minds now.
Disadvantages: free offers are limited and the support member of the community keeps calling you to join a paid one or any other program.
So over nice app if you want study and score more