I don't know about iOS, but on Android you don't use Tapatalk, you use the motorcycle.com app. It's built off of Tapatalk, but not the same thing.
Hmm well, the first few times I opened the site on either my phone or iPad, it had the bar at the top saying to open tapatalk to use the mobile version. I am using iOS 8 now, but have been since before I left for deployment. I had the other app...but it may have been awhile ago on my old android. Oh well, not gonna pay to download that other app!!
Thanks for the responses.