Content is good. It is more clearly defined by visual than any of the other martial arts this company sells in my opinion. The sub menus are completely messed up, except on their free version of the app. This version of this martial art has a lot of finger attacks, which to apply fully will require exercises that lose the ability to read Braille. On the other hand, there are potent attacks that don't require the fingers, which means it is still useful.
I enjoy exploring other styles of martial arts. This gives a great reference.
The Bujinkan Application!!