Funktrainer is an Android application developed by hosendroid that contains the official question catalogues for the German ham radio license class A and E from February 2007 and October 2006, respectively. This app is specifically designed for those who want to prepare for the ham radio license exam in Germany.

The program is translated into English, while the questions are presented in German, as the exam must be taken in the German language. Funktrainer provides a comprehensive collection of questions that covers all the topics needed to pass the ham radio license exam. The user interface is user-friendly and easy to navigate, making it easier for users to focus on their studies.