“Vem, Kaj Jem!” (I Know What I Eat) is a mobile app designed for diabetics and people wanting to live healthy. It provides a simple and attractive method for the control of food intake – carbo hydrates, proteins, fats and calories – and the burn of calories in different sporting disciplines at the same time. The app helps diabetics in monitoring their insulin intake, and records the data on the measurements of blood sugar levels and weight. The app also enables an export of data in the form of a report, which can be e-mailed to your General Practicioner. The registration is simple and can be done with a Facebook or Twitter