Köşebilgi Video Çözüm is a free Android app developed by FERNUS EĞİTİM TEKNOLOJİLERİ A.Ş. The app is designed for students who seek solutions to their book questions. This app provides a comprehensive solution to all the questions present in the book. The app is compatible with Android version 13.0 and above.

The app is designed to provide students with an easy-to-use interface that allows them to access the solutions to their book questions quickly. The app is updated regularly to add the solutions to the missing questions. Köşebilgi Video Çözüm is a great tool for students who want to learn and understand the subject matter better.