This can be confusing, but App Intercepts are for an iOS or Android app that you want to use Ethnio inside. You can have an Ethnio screener appear directly inside an app. But then back on the web, of course you have mobile visitors to your site, and all our Web Intercepts are responsive, so they have a mobile view. That's the "mobile web."
Lastly, we have links, and that is just a straight up URL that you can email, post on social media, etc.
Hope that helps!