EveryDollar is currently only available as an iPhone app. However, you can run iPhone apps on your iPad. Simply search for "everydollar" and change the device search setting to "iPhone Only" (see image below). Keep in mind that the apps designed for iPhone Only will not fill up your iPad screen.
*You can also go to EveryDollar.com on your iPad to access EveryDollar. The browser version is fully functional in Safari.