The Adult Education Centre (Volkshochschule) offers a complete professional language course for advanced beginners with its A2-B1 German for work course. This course is available online and as an app.
Attractively designed graphics and short films help you learn. Free registration is required for the course.
Tip: On the course website you can also view the exercises as a guest (without registering).
App language: German
Language level: A2-B1
Price: free of charge, registration required
Provider: Volkshochschule (Adult Education Centre)