This is not necessarily what you're looking for but the latest watchOS bedtime alarm on the Apple Watches has been game changing for me. I have the alarm set on

This is not necessarily what you're looking for but the latest watchOS bedtime alarm on the Apple Watches has been game changing for me. I have the alarm set on weekdays and the watch gently vibrates to wake you up without any sound. Because it's very subtle and not a sudden alarm I wake up feeling much better. If you have a partner, it also means you won't wake them up with sound.