I would like to recommend Classplus as one of the best Online Teaching App. The number of students going to coaching institutes online has been growing at double-digit rates for the past decade, especially in this pandemic. Here you can create your own "Coaching App".
1. Easy to create any type of courses
2. Educators can create online courses (paid and unpaid)
3. Publish study material, create a free mock test, and share free previous year paper.
4. Tutors can manage all coaching offline work through their App.