How many movies have Fritz Günthner and Karl-Eberhard Schäfer collaborated on?

They have worked on 4 movies together! Their first movie together was Sehnsucht nach Liebe (2004) while their highest rated movie together was Zwillingsküsse schmecken besser (2008). They have not worked together since Mit der Tür ins Haus (2019). They are most known for their comedy films together.