Ive tried some other apps, and even if they have a nicer UI, this one still does EXACTLY what I want. Its great! I love the ability to use your music library as your wake up sound. Even though the app has to be open for the alarm to sound, what are you going to do during the night on your iPhone when youre sleeping? Just open the app, plug in you iDevice, and sleep the device and the alarm will sound. Defiantly worth 99¢!
mistertimn about 12,24 Alarm Clock Sleep Music, v1.1.6