Looking for an Android App to be designed

I am looking for an App for my students. It will primarily host recorded lectures which the students can watch after they log-in. The most important feature must be that it shouldn't be possible to download, screen record, or take the lectures offline since they are copyrighted and are paid for by the students.

Let me know if you need more details. Please send me a reasonable quote since I am a budding teacher. Thank you! WordPress ...