People who go abroad to do business have to understand the local language. Berliner Hans Raffauf, for instance, is going to Denmark. He's already learning Danish -not in a language course, but on his Smartphone and laptop.
To do so, he uses the online language program Babbel. The company of the same name says it is fast, individualized and affordable. Babbel was founded in 2007 in Berlin. The online service now employes 170 people. Report by Grit Hofmann and Danijel Visevic.