How many movies have Emrah Ertem and Tillman Schmidt-Kärner collaborated on?

They have worked on 2 movies together! Their first movie together was 2030 - Aufstand der Alten (2007) while their highest rated movie together was Im Weissen Rössl - Wehe, du singst! (2013). They have not worked together since Im Weissen Rössl - Wehe, du singst! (2013).