Can I save the completed exercises in the Klett Sprachen App to hand them out for check? 25 June 2021 12:47 Updated Yes, you can print out the exercises either empty or filled out. Related articles What is the Klett Sprachen App? Where can I find the allango licence key? Can I play media files in the Klett Sprachen App? As an institution, that already has bought textbooks, do we get a discount on the digital editions?