What I actually needed was a simple way to download a torrent on my iPhone and send it to my Mac running at home. I couldn't be bothered to set it up anyway, it would involve having a fixed IP address or DynDNS - too much hassle to being with. And since I'm on the road most of the day, Transmission's WebUI isn't any good to me.
For a long time now, I've been searching for a way to start a torrent download from a remote location.