Why? Piracy. Once a high-quality PDF is released, it ends up on file-sharing sites within hours. Because their books are essential for exams, the publisher relies on physical sales and institutional licenses.
Have you used the Europa Media app? Share your experience in the comments below! Disclaimer: This post is for informational purposes. Always respect copyright laws (Urheberrecht) and the terms of service of educational publishers.
Buy the physical book. It does not run out of battery, and you can bring it into the exam hall. Use your smartphone to scan specific pages into a personal PDF for studying at home (that is legal under "private copy" laws, as long as you don't share it).
