I've been waiting for a Taekwon-Do related app to land on a BlackBerry device for some time. When one didn't, I thought I'd make my own. So if you're also looking for one, check it out.
The app covers the ITF style. It goes through the colour belt patterns in a step-by-step guide. It also includes colour belt meanings and Korean terminology.
The app is currently on for the PlayBook, however a phone version is currently in the works.