How many movies have Anno Saul and Frank Auerbach collaborated on?

They have worked on 3 movies together! Their first movie together was Reiff für die Insel - Neubeginn (2012) while their highest rated movie together was Reiff für die Insel - Katharina und der ganz große Fisch (2013). They have not worked together since Reiff für die Insel - Katharina und der große Schatz (2015). They are most known for their comedy films together.