What is the procedure to make an app

Answer 1

https://www.sololearn.com/learn/1439/?ref=app

Answer 2

lol, depends on the kind of app, starting with which platform (web vs iOS vs Android). Try searching, reading some, and asking a more specific question. I think you'd get more valuable answers that way.

You might find reviewing this helpful:

https://www.sololearn.com/Blog/38/8-simple-rules-to-get-help-from-the-community/

Happy coding!