A healthy lifestyle is of great importance in general, and even more for people with a chronic disease since poor nutrition can have negative effects on their health. As there is proven to be a lacking vitamin and fiber intake within this target group, we have developed Blend. Blend is a smoothie based service supporting vitamin and fiber intake of adolescents in high school environments. By buying fruits and vegetables in the school canteen, students gain points in the app related to the color of the chosen piece. After having eaten a certain amount of pieces, they receive a QR-code to exchange for a smoothie at the Blend machine in the canteen. Here they may choose a flavour based on their two most eaten colour categories. Therefore, by using social learning and comparison, direct rewarding of healthy nutrition and personalized feedback and suggestions, Blend supports behavior change towards better nutrition.
