sorry, been busy...
The "lite" version only allows 2 forums (you can delete their support forum and get the 2nd)
I don't think you can change the views or anything, it's basic, but loads faster than via the web and seems to use a lot less data too. I only installed it on the Jeep board a couple of weeks ago to try it out. but does make it much easier to read and reply when on the move.
Tapatalk is meant to be a LOT better (but costs more), but as I have paid for exactly 1 app since buying the iphone 14 months back and that was motionX GPS to give me offline mapping (not OS mapping)........
If more of the boards I use go the TouchBB route, I may pay the £0.59 for the full version (or I may be tight and just store the urls in notes and copy paste as I need them

)
I am hoping to meet up with some of the guys in May that have tapatalk to see if it's worth the hype. You don't even get a copy to test it out with your board when you set it up
I am guessing that neither would work with mods to the forum very well (Garage mod etc)
You can, if it's enabled on the board, attach pictures direct from your phone too (1 per post) and it seems to re-size them to a sensible size too.
If there are multiple pages to the thread, an "eye" will appear at the top, and you can then slide to whatever page you want. again, a nicety here would be to select the page from the front screen, but I guess that may come with time.