Based on the reviews, it sounds like it used to do exactly what I described above, but then they changed it so it can only read the first two steps of a recipe, making it kind of useless. I wonder why they did that?
You lock into (become entangled with) a random selection from a superposition of states, according to the probability described by the wavefunction at the time. What the deal is with the other states you don't see is a matter of interpretation, e.g., Many Worlds hypothesis.