I need a new elearning android app feature will be same as byjue's and udemy. The UI is the most importantppart of the app. It has to be same as byjue's and udemy. We can't compromise on the UI. Payment will be or advance will only be paid after ui is final. No advance before that whatsoever. I need a php backend to control everything in the app including design. I need a place to add course, content, mock test from php backend. We also need front-end website to buy the courses. The course can only be viewed in app the website will only for buying the course. We also need encrypted streaming, screenshot prevention, screen recording prevention. Along with encrypted offline course downloads.