Good sounds, but needs nighttime features

The actual noises are excellent for creating a sleep environment. But for night use I need the features that other apps in this category have. At the very least, the sounds should continue even if the screen is turned off--who wants to look at the glowing app controls all night? Or an option to show a clock. It would also be great to be able to set an exact turnoff time, so that it turns off at the same time every morning.

KinamiT about TaoMix - Create your own Relaxing Ambience with Nature Sounds