This document discusses a tool created by Deutsche Welle to help young people choose careers by using open data and job statistics. The tool calculates lifetime income potential for different professions based on factors like training time, typical pay, job availability, and industry stability. It was prototyped in two days using extensive open data and national job statistics. The aim is to provide relevant career guidance to young users and help them make informed choices about their education and professional paths. An example output shows the potential differences in lifetime income that the same job could provide depending on whether one is self-employed or employed. The tool is now live online for users to explore career options and discuss results with others.