Apart from loads of other studies, it comes with Darvas boxes that I like to use in my trading. I hear it's pretty complicated to implement. Haven't seen them in many others. There are few others I used in the past but this one I liked the most.
It's pretty cool. Use it a lot. Not really free (free one comes with only few days of data). But not too bad at $99. Comes with lots of fx, stocks, index data for free and has loads of neat features. The data itself is worth it.
