If for whatever reason the default alarm clock in iOS isn't doing it for you, Rise happens to be one of our favorite third-party substitutes. And this week, Apple is giving away the app — normally $1.99 — at no charge as part of its revolving App of the Week promotion. Rise's dead-simple interface (you slide a finger up or down your iPhone's screen to set a wakeup time) and elegant design make its normal price easy to part with, but when it's up for grabs at no cost to you, we're pressed to find any reason why you shouldn't give it a shot. You may be thankful you did starting tomorrow morning.