Hi Clive,
Before I explain a bit more, I must say when it comes to anything electrical I am absolutely useless, I can just about get my head around how to change the polarity on a point. And furthermore I have no local club or friends to give me a hand ( Billy no mates )...
So it had to be fairly simple, and yes your correct it needs a Lenz interface, but I just plugged it in and connected it to a cheap router, found the IP address ( think that's what it's called ) put it in the app and Bingo ! Such a relief and easy to use, all the controls at a flick of a finger, literally.....
Sorry I can't help you with a phone, all my workmates laugh at my ( old ) iPhone 4 and ask how long it takes the valves to warm up when I switch it on.... But also you do not need a iPhone , you can use a cheap old iPod or an iPad tablet.
Anyway sorry for the hijack Andy, normal service can now resume.
ATB,
Martyn. PS, Doh, also you need a Lenz control box thingy , sorry still half asleep...