Help with custom app

[iambenmitchell]

Hello, I am trying to make a similar app to this but dedicated for my own DNS server.

I simply want to have something in the view controller that is like
let dns="192.168.1.3"

and a single connect button. Once pressed it connects to the DNS via the VPN method so that it works on cellular too.

I've been looking through the app and this seems really complex, at its core it does what I need to do but I can't work out how to separate it as it's written in Objective-C, Java Script, Go etc. I am a swift developer myself :/

Unfortunately I cannot find anything else like this to work with.