Why not just use one of the apps? I know we have half a dozen on Android, and I've seen at least one iOS one, and a couple mobile targeted web versions...
Why use one of the apps though, isn't this a website, shouldn't it be made accessible through the common web browsers. Individual apps which just apply a style, sample and modify a website and pipe it through a hidden browser object seem strange - we don't need apps for every different bit of content, that's one of the great things about a properly standardised web and high quality browsers.
Different apps for every bit of web content seems perversely inefficient to me.
I have an app for accessing websites and webapps, it's called Firefox, and it even synchs my credentials and history between my various computing devices. Why would I want to use a different app?