To give especially young people more interested in the victims of the Nazi period, we had to create the idea of ​​an app for stumbling blocks. If you walk through the city, they encounter a repeatedly: the gold pieces fall directly into the eye. We all see this monument stones a wonderful idea, but on the stone itself only a few details are available, and precisely at this point is to help our app. To obtain more information in the form of the memory sheet of the stones, the user only needs to open and already it determined by GPS or the stumbling blocks that are its position closest to our app - one click and the memory sheet appears. Of course, the app is also useful for targeted searches stumbling blocks.