When Adam Berger, 29, who has Type 1 diabetes, decided to get a sandwich from a deli, he first ran it by his mobile application ezbds, which he launched in Stamford two years ago. The app told him that in the past when he’d eaten that particular sandwich from the same deli, he hadn’t experienced glucose spikes. “So I decided to stick with it,” Berger said. “An hour later when ezbds reminded me to check, my glucose was 123.” That’s a good number according to the American Diabetes Association (ADA), which suggests a target of less than 180 mg/dL an hour or two after beginning a meal for adults with diabetes. “By tracking what they eat, people can identify how certain foods affect their blood sugar,” said Nancy Salem, coordinator of the Diabetes Education Program at Danbury Hospital.