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You are not the target audience for this if you don't see its utility.

Ironically, in your own dismissive response you give a good reason for the app's existence.

You cut off the relevant part of the description. It tracks your sleep cycles so it can wake you up when your are naturally in a light part of your sleep cycle. That way you aren't going from a dead sleep to being jolted awake by an alarm. I used it for years and really liked it.

Not only that, why plug Sleep Cycle and not Sleep for Android? I use it to quantify my sleep to actually understand my incredibly odd non-24hr sleep cycle, and do so to actually put technology to a non-interfering, but useful, role.

I felt the same, but some of the comments here have enlightened me as to the reasoning (helps keep you from going from a dead sleep to being jolted awake by an alarm), so thanks for raising this question!