I've got it too. I've got one of the BAFX adapters that is about 3 or 4 inches long and in a black plastic case. It was <$20 IIRC.
I love the app a lot. I feel in the dark when I'm in someone's car without it and can't see random things like my throttle position, intake air temperatures, and what not. It's funny how you get used to that I'm used to being able to look at that kind of stuff.
It's also nice because I LS swapped my truck and still haven't gotten my tachometer working so Torque has been my only tachometer for the last 6 months. It's also really nice be be able to pull up codes and stuff at home to diagnose problems (super important with an engine swap saved me a ton of time)
For the record Torque lite is still pretty decent but torque pro is a decent upgrade for the few dollars it cost. (at least in the States)