[RCD] What can be reached, changing skin?

[Vladimir Gorpenko]

I wasn't engaged in development of skins for RC yet. Before being
engaged in it, I would like to understand what results can be received.

Whether it is possible to change configuration of the screen? To make RC
more convenient for operation from the smartphone?

It seems, someone advertized the paid skins intended for this purpose.
So it is possible?

And maybe, the decision of this task already exists? I know the program
RoundCube for Android which not bad adapts the interface. Though it is
not absolutely correct.
And for iOS such program is?