I want to make file sharing app?

[ShaikhSajidAli (Muhammed Sajid Ali)]

Same reply for here also

How to make simple invoice making app?

If you are going to ask “Hi, How do I make an app?” that means you don’t know the basics of how to start an app. No one here (unless you pay) will give you a full tutorial on how to make an app. Please separate what your app will do in small steps or tasks, and ask specifically how to do a task that you don’t know or you can’t figure out how to do.