There were questions/comments in other threads in this section about the existing Trapster BlackBerry app (to the effect of "the interface sucks"... which is true!).
The good news is that there is a new iPhone app coming out on soon on the iTunes App Store, here's a video of it:
TG Daily - VIDEO - Speedtraps meets social networking in ultimate iPhone app for lead foots
and an all new BlackBerry app that is very similar in operation and user interface to the iPhone one.
These were both promised months ago and are horribly late. Sorry about that, but stay tuned!