SignTrainer - Verkehrszeichen is an Android application developed by Fahrschule.de Internetdienste GmbH, designed to help users learn and refresh their knowledge of traffic signs in Germany. The app is free to download and falls under the Education & Reference category.

The app is primarily aimed at driving students who want to prepare for their theoretical and practical driving exams. It allows users to learn the meaning of traffic signs and then test their knowledge in game mode. The app helps users to specifically target the traffic signs that will appear in their driving exams. By learning the traffic signs in advance, users can go to their driving lessons well-prepared and confident. In addition to driving students, the app is also useful for those who already have a driving license as they can test their knowledge of traffic signs and try to beat their high scores.