I tried it out.
I interfaced with AHP using either the activephone http api or the X10 Commander's server.
It is very promising and is a cool idea, but their documentation is horrible and almost nonexistant. There isn't much support for anything but upb. I asked a bunch of questions about their http api and on how to set up sensors (to poll status of devices). I got no answers. All the devs pretty much ignored all of my questions. Some other users tried to suggest I buy upb interfaces which was sort of irrelevant. The functionality is there, the set up window is there with the fields, but whatever I tried to put in those fields, did not work. It was very frustrating.
Without status polling, all I could do was a static remote like the activephone interface.
I gave up eventually.
I did however try Homeseer's HSTouch Designer software. That thing is amazing and works on ios or android. With a much more polished designer compared to openremote, it is highly capable. But the only downside is, Homeseer software HSPRO (the one that includes HSTouch) costs $600.