Right now, only a third of restaurants have smartphone apps. Broken down further, half of QSRs and fast casuals do, but only 18% of full-service spots have branded apps, according to the National Restaurant Association’s 2016 Restaurant Technology Survey. The primary reason for having an app, says the survey: building sales and customer traffic. Yet, “breaking into the premier shelf space on a mobile device is very challenging,” says Andrew Feinberg, principal at Deloitte. A study by Deloitte found that consumers don’t have a broad array of restaurant apps on their phones. They have less than three. So what are some of the features that guests are actually using today? And what are some functions the restaurant app of the future just might have?