A1 A2 B1 B2: German Language Basics by Diaa Abdullah is an Android app designed to teach German language fundamentals for levels A1, A2, and B1. The book is authored by Diaa Abdullah and designed and written by Elias Abdullah. This app is categorized under Education and Reference and is free to use.

The book contains a substantial amount of information and important basics necessary for learning German. The app has many great features, including the ability to work offline and easy navigation. The latest version of the app has been thoroughly reviewed and updated to ensure that it is error-free.

Diaa Abdullah is the teacher of this course, and his approach is straightforward, making it easy for beginners to learn the German language. The app is ideal for anyone who wants to learn German, whether you are a beginner or an intermediate student.