Sustainable Products, Projects and Green Design Fresh Mobile Application by Deyin Zhang 张德寅 Based on the waste of food caused by over buying and leaving food in the refrigerator, the app fresh was designed. People can use it to scan shopping lists to get records of food purchases and add food to app. App will record the shelf life of food and distinguish the different shelf life of food in the refrigerator through green, yellow and red prompt boxes to remind to avoid wasting food. In addition, the app also provides weekly waste food reports and cumulative waste food statistics to reduce waste.