Hey, I just gave this a try. (It’s not bedtime for me, but I had 10 minutes to sit quietly.) It very nearly put me to sleep despite the time being only 4:30pm.
I noticed that the later prompts tended to feel a bit irregular in their English: “Pebbles on bottom of stream” is one that I remember; “bird in small nest” might be another. “Pebbles on the bottom of a stream”, and “A bird in a small nest” would have sounded more natural.
I may be a little outside your target user base: I tend to fall asleep very quickly. (I joke to my spouse that by default I don’t have much happening in my head, and when it’s time to sleep, I just “listen to the dial tone.”)
One parting thought; I was pretty skeptical when I first started listening, and about halfway through I was gamely doing the visualizations, but mentally rolling my eyes (“This would never work!”). Around the 5 minute mark I noticed that I was in a fairly meditative state, and the app could have told me to imagine I was a being of light and I probably would have.
Around the 6 minute mark I noticed that I wasn’t really paying attention to the prompts at all; and I think it was only the weirdness of the English of the prompts around that time that kept me awake.
Overall a little weird, a little fun. Thanks for building and sharing it!