The screenshots which are considered as being “very alpha” show a nice and clean interface with the video in the top right, navigation on the left and the transcript underneath the video. The initial 1.0 release will feature video navigation, video viewing, interactive transcripts and offline support. Exercises will be released in the next version.
An Android version is also on the road map as well as a version for the iPhone / iPod Touch. For developers, the entire source code of the application is available on Github.