In the app we have tried to provide all that is needed to simplify your lectures and life as we have full lecture notes summarized. You can write your own lecture notes here and save them on the app and use our calculator. One can also choose to remind themselves of what and when to read by setting a notification reminder and setting as many as possible. In this we have included the following topics on Air pollution, Air treatment methods,Water pollution and treatment methods, water treatment plant design and equipment sizing and design,Land pollution and solid waste management and so much more.