I used to be a Web Developer and I'm not experienced at developing iOS Apps. I've just found out that I can make the whole App a Mobile Website. So my question is if Apple accept these kind of Apps, where the whole content is a normal mobile friendly Website. As Apple can't control the content displayed in such an App.
There are three ways you can leverage your expertise as a web developer to develop iOS apps:
SFWebView
or WKWebView
and use it to present HTML (either stored or retrieved remotely) to the user. In this case your app would have to go through AppStore review. There's plenty of apps like these, so I would assume it would not be a huge issue.