mobiles and desktops are very diffrerent and need different user incerfaces. So you are not savin, much work. In fact trying to handle both in on may be worse because of all the special cases. Be glad you don’t have to support teletypes, they demand different user interfaces.
Nothing is exposed. There are things I want exposed, but I don’t want to keep security patches up to date, even if there is a zero day. I’m looking for someone trustworthy to hire for things that it would be useful to expose, but they are hard to find.