Can the web browser search controls be removed from mobile app?

With iphone i can create a shortcut to a web browser by adding the web domain to home screen and I’m trying to remove the web browsers search bar from the page so that the mobile app is the only content on the screen. I’ve seen web apps that dont have the web browser content on their app once its added to the home page on their iphone and im wondering if thats possible or if there is a different solution to this that im not seeing.