Staffbase is one of the largest - now probably the largest - providers of app-based employee communication in the world.
The reference list in Germany ranges from Adidas to DHL, from Audi to Telekom.
It has been seven years since business IT specialist Böhringer, the son of an architect and a computer engineer, founded a kind of Facebook for companies with two partners.
Initially, the target group were mainly companies that have many employees in the field or on the assembly line, without access to a computer or intranet, but with a smartphone in their pocket. But now the apps are really taking off.