Are you kidding?
Tapatalk is best app for all forums
"If you've ever tried to follow multiple forums on a mobile browser, you know how inconsistent of an experience it can be. We save you time and make it easy to follow all of your favorite online communities on your mobile device.
You can monitor, post, and add photos to all your favorite forums, all in a single app. You can even elect to receive push notifications on your favorite threads.
Tapatalk can also help you discover new forums based on the topics you like to follow."
It has a great UI for mobiles and has push notifications for all sorts of functions, i.e PM's bookmarked posts etc...
https://tapatalk.com
Download tapatalk on Play Store
If you don't have Play Store installed,
get apk file here