Right. 
The mobile and desktop “apps” are actually what I usually call a ‘captive browser’ (or “embedded browser” as in the OP). This is the only sane way to deploy an “app” for a cloud-based system, otherwise you end up with two products to develop, maintain, and support. 
There’s already a Desktop version of the web site and a mobile version. Both use the same back end database and such but have different CSS code and possibly some other tweaks. Two versions/modes for the site are more than enough complication as it is.