For to-the-point readers, read the bolded text
aSleep is a “Sound-Machine” type of app. It is comparable to Ambiance. I find myself using asleep more than Ambiance because of the ease of the user interface and the sounds that it has.
-Large Selection of Sounds
-Alarm at the end of timer feature
-When selecting a sound, you have to push Play/Stop every time you want to hear a different sound.