Hey there,
So I have seen a lot of people asking about mobile apps for the forums. I would suggest the site host to look at
http://www.tapatalk.com/ its basically a line of code that you put into your script and it allows this (now free) app to let users use your forum with a universal app. I have mentioned this to other forums that I have been a part of and the responses have always been incredibly positive. Its a fast and free way to get people an organized mobile forum. Just my 2 cents, hope you guys see this.
Thanks!