Byjus app is the best app I have used . I'm a 12th standard student and it helped me a lot in understanding the concepts . All topics are covered . Important concepts are stressed . The concepts are very clearly explained. We can learn things faster by using this app . Its cuts down the time you spend for studies. You can even make notes if needed bcoz all the important things for exams are mentioned on the screen . Coming to the quality of video lecture , it's just awesome. You'll start enjoying studies .
Once you login into this app . It absolutely works wonderful for maximum 15 days . Then they ask you to pay for further usage of this app .