I thought that the getting it running part should be easy, given that I've told many, many times that Android and IOS are supposed to be broadly equivalent mobile device user environments.
However, I came across a Clear Only If Known (COIK) problem which stalled my progress for a while. Fortunately I was able to overcome it and found the Setting App and User Guide App after all!
Read all about the mysterious thing on the home page.....
....that turned out to be the solution, learn more about what a COIK problem is, and why this one trapped an otherwise experienced mobile device user. You'll probably recognise that you've been unwittingly caught by a COIK at various times as well!