Matchecken is a lifestyle app developed by Sockerchecken AB, available on Android for free. The app helps you keep track of the amount of added sugar, juice or juice concentrate in the food you buy by scanning the barcode of the product. The app provides a color-coded analysis of the ingredients list. Green indicates that the product contains no or a small amount of added sugar, and yellow indicates that it is okay to eat. Red indicates that the product contains more sugar than the recommended amount, while black indicates that you should limit your consumption of such products to stay healthy and avoid tooth decay.

You can also set the app to alert you to a variety of E-numbers, including unnatural substances, unsafe E-numbers, sweeteners, flavor enhancers, citric acid, phosphates, and nitrites. Additionally, the app shows you the amount of carbohydrates in the product. However, some products may not be registered in the database or may lack important information, in which case the app will show a question mark or indicate that information is missing.

Overall, Matchecken is a useful tool for anyone who wants to keep track of the amount of added sugar and other substances in the food they buy. The app is easy to use, and the color-coded system makes it simple to understand the analysis of the ingredients list.