Einbürgerungstest Trainer (ETT) is a dedicated application designed to assist users in preparing for the German naturalization test. It offers a vast question bank of 460 questions, including 300 general inquiries and 160 specific to each federal state. Users can easily switch between states, making ETT a versatile tool for anyone looking to complete the naturalization process.

Key features of ETT include a confidence level rating system that assesses your readiness based on your responses, an optimized question-selection algorithm to ensure comprehensive coverage of all questions, and various training modes. Additionally, users can mark difficult questions, track their progress, and utilize dark mode for comfortable viewing. Notably, ETT does not track any personal data, ensuring that all information remains on the user's device.