I had a go with the app (for android), it may not have been the most recent version. I wasnt really impressed with it - like I couldnt find a quick way to get to our forum, seemed more aimed at people browsing random boards.
Thanks guys, very helpful. I've only just got a new phone and looking at the site through the browser was really cumbersome for me, so I thought the app might be better. But it's not free. I might leave it.