Does anyone know of a mobile Twitter client (preferably at least one each for iOS and Android) that allows you to point to arbitrary sites that implement the Twitter API? I know of some that let you use multiple services, but I want to use this with a demo of how easy it would be to replicate the API on our system. It can't be a predefined system the client knows about, I want to point to the top of a hierarchy with the Twitter API under it and have the client work.

Anyone have any ideas for this? It is a remarkably hard thing to Google for.