Scoring systems are used in many oncological areas and serve as prognosis or therapy decision. Recently, scores for prognostic assessment for diagnosis such as brain metastases (recursive partitioning analysis (RPA), graded prognostic assessment GPA) [1,2], prostate [3] or gliomas [4–9] were established. The calculation strategies are very different, ranging from simple calculations with point systems, to nomograms, to complex formulas determined by statistical models. Of course, all of these factors can be used independently, however, complex calculations using models and other tools (such as mobile or web-based apps) can help quickly to calculate nomograms or other “numbers”, which correlate well with outcome.