Here is some information supplied by Tapatalk to give you an idea what it is and how to set it up.
Tapatalk is a mobile forum app for iPhone, Android, BlackBerry and Nokia. Tapatalk supports vBulletin, phpBB, IPB and SMF forums and forum owner can activate this service for free. Tapatalk supports all the usual forum functions plus full screen image viewing, image upload, caching (less reload), private messaging, all these features are accessible in just a few simple taps.
Showing New and Unread Thread with Avatar and Number of reply:
Images are thread are converted to thumbnail and allow full-screen viewing
Ability to see Who's Online and what they are doing:
Ability to search by topics and posts:
Ability to upload images directly from Android and iPhone!:
Check out http://www.tapatalk.com" onclick="window.open(this.href);return false; for more information!
If you have any problems let me know, otherwise enjoy!!