Is it possible to use Javascript to emulate the Add to Home Screen option in Mobile Safari's bookmark menu?
Something similar to IE's window.external.AddFavorite(location.href, document.title);
possibly?
Until Safari implements Service Worker and follows the direction set by Chrome and Firefox, there is no way to add your app programatically to the home screen, or to have the browser prompt the user
However, there is a small library that prompts the user to do it and even points to the right spot. Works a treat.