The WebView of the mobile app uses a useragent called "appsconda". So, you can use this parameter to do things.

$userAgent = $_SERVER['HTTP_USER_AGENT'];

if (strpos($userAgent, 'appsconda') !== false) {
            //content here will be displayed only on the mobile app but not on the general website
}

It would be cool if the Joomla template has a setting to enable AppsConda. And when enabled, the unnecessary blocks (like, header, footer, sidebar, etc) are no longer rendered, if the useragent is appsconda. This makes the website load a lot faster in the mobileapp.

It would also be a good idea to have a few module positions that would appear only on the mobile app.

As a component developer, you could have a view that is best optimized for mobile view. This way, an admin could use those views in the mobile app.