Why not just use the mobile site? It's usually a lot faster that way. If anything you could look into converting apk files into cod(or whatever BB uses), but that probably a long shot in the dark.
The only version of tapatalk I can find in the appstore is 2.99. It doesn't appear to have a trial either.
The mobile site's pretty good. But when i click on links it starts me off at the end not at the beginning. And to go up a section I have to scroll to the all the way to the bottom and click up instead of just clicking the back button. And it doesn't save my participated topics the way it does on this app.
The app uses the Tapatalk engine, nut is probably not available in the Tapatalk app.
If you have a Playbook then you should be able to convert it, seems like it would be compatible.