Sale has ended but you can still get this app.
Download Speach – Arabic to German Now
Speach - Arabic to German

Official Description

Sprachhilfe Arabic to German

- Arabische Kurzwahl Tasten
- Deutsche Aussprache
- Google Übersetzer

Es sollte der google text zu sprache mit Deutsch installiert sein
(Systemeinstellungen - Text zu Sprache)

Voice aid Arabic to German

- Arab-touch keys
- German pronunciation
- Google Translator

It should be installed to the Google Docs language with German
(System Preferences - Text to Speech)