Lightning Nap is a lightning-fast nap alarm for Windows Phone 8. Simply set how long you want to nap, choose from several custom alarm sounds, and hit “set alarm”. Once a nap alarm is set, you can delay or move forward the alarm’s ringing by 5 minute increments. Have some pleasant naps!
This app is $0.99 and has a free trial. In the free trial, you may only use the first alarm ringtone.
Click here to download the app.