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Besides ordering dinner, you can also use the app to find the nearest Domino's outlet or to track the pizza's voyage to your home.
The app [iTunes link] itself is free, but the pizzas, of course, are not. You can pay by PayPal, credit cards and cash-on-delivery; voucher codes also apply.
Domino's UK has found success in using tech and social media initiatives. Last year the company said it saw a 29% increase in profits and credited its social media programs, including a Foursquare promotion.
Although limited to the UK market, Domino's iPad app follows Pizza Hut, which in May was the first major pizza delivery service to launch an iPad app.