This app calculates you any money if you have a mini-job in addition to the employment office (450 € basis) have. Here, you get to keep up to € 170th The percentage of 20% for earnings over € 100 automatically considered. You need to do is enter the amount that you get the mini job you VOR, which has already been paid by the labor office and your hours worked and your hourly wage. Then everything else automatically calculated.
The three most important values are also stored locally on your phone and loaded when you start the app. So it gets even faster!