How many movies have Daniel Koppelkamm and Jörg Grünler collaborated on?

They have worked on 3 movies together! Their first movie together was Das Geheimnis des roten Hauses (2005) while their highest rated movie together was Das Ende der Eiszeit (2011). They have not worked together since Das Ende der Eiszeit (2011). They are most known for their drama films together.