Who in their right mind would expect to find an app that turns a phone into a flashlight?!
1. Anyone who's ever noticed that a cellphone whose display is activated in a dark room casts an appreciable glow upon his or her surroundings;
2. Anyone who's ever been with a smartphone owner who has deployed such an app.
That ain't a small group, and the fact that it's grelber-free doesn't make it the exclusive province of idiots. (Unless you're using an exceptionally broad definition of
idiot!)