Should not have adverts
The video content is freely available online. I don't mind paying for a platform to be able to watch the videos easily on my mobile, but I expect it to be free from banners. I think it is greedy to get people to pay for the app and have advert banners at the same time. Also, the cataract surgery videos are duplicated (every video is listed twice)..please remove banners and sort out lists bugs and your app will deserve 5 stars.