What makes a writing app dangerous? Is it the blank space set up before the writer? Is it the notion of using a form of communication without context? Does it have some other type of functional definition or characteristic that makes it dangerous?
Well let's have a look - there's a timer, a generic area for typing that appears to be fully justified, and in the lower left hand corner there is some very faint text illustrating typing speed and some other metrics. I'm still not seeing much of any danger as I would relate to the term. There's a bit of mystery - as in, what is the actual purpose of this other than intrinsic use of the language?
Oh, I see. Taking a bit of time to contemplate the next line and the screen starts to fade away. Is it taking the text along? Where does it put the text if it disappears? Will this be chopped up into 140 character components and spread amongst the world a la E-Horse Books? That could be dangerous, at least moreso than a general sense of foreboding that text will be gone if the writer doesn't keep going, and going, and going, which while constructive in its own right, isn't particularly known as the best approach to writing. Sometimes thought should be given a priority.
So, at the end of this five minute exercise, we discover what's really dangerous about the program. It's clever. The reason the app is so dangerous is that it prompts a person to keep typing and writing with minimal amount of active thought. Yay.