Chemistry by Vaishali Madaan is an Ed-tech app designed to help students learn and understand the concepts of chemistry. The app offers video lectures, study material, and mock tests on various topics such as Organic Chemistry, Inorganic Chemistry, and Physical Chemistry. The courses are developed by experienced teachers, ensuring that students receive quality education. The app also provides personalized feedback on the performance of students, enabling them to improve their weaknesses. With Chemistry by Vaishali Madaan, students can learn and enhance their understanding of chemistry.