Download It Now From the Apple Store, Free

If you haven't made Seamless an integral part of your take-out operation by now, you're missing out. The behemoth's app takes the delivery game to the next level with one-touch ordering, email confirmations, and the ability to search for dining discounts with ease. Any app that allows you to order Chinese food while walking home from work, and arrive just in time to chow down, is deserving of a download.