Snapkin is a calorie tracker you use by photographing your plate. There's no scale to weigh with, no barcode to scan and no database to search. Take one photo per meal. Snapkin works out what is on the plate, how many calories it has, and how much protein you have had today. It runs on iPhone and Android in 10 languages, and costs €9.99 a month or €49.99 a year at the launch price.