Creating a mobile app with iframe

Iframe is just an example.

• I have a responsive website.
• My goal is to deploy my website as an application.
• App will be deployed for iOS and Android
• I don't want to use 3rd party provider whomever promises to convert my website into android app.

What is the easiest / fastest way to deploy an app using current website ? I thought of iframe-like but i know this community know better. I need your advice.

Thanks in advance.