Not exactly a great movie (you have to avoid critical thinking and abandon all sense of logic), but since the topic (two young girls want to climb a thin transmitter mast of 600 meter) obviously plays with our strongest instincts, it will most likely be an experience with thrills and chills.
I think FALL is a typical WYSIWYG horror movie; it delivers on its premise, no more, no less. It’s basically an invitation to live out your fear of heights from the comfort of your couch. FALL is a horror movie where the monster is simply “height”, and as such, it is quite effectively made. I found myself clutching the armrest more than once. (I think it probably helps to see the movie on a big screen that “lets you be there” for it to be most effective.)