The "公務員試験 民法 過去問 2023 解説付き 公務員試験対策" app by App Mart is a free educational program available on Android. It is aimed at people preparing for the national civil service exams, including the specialized exam for "民法" (civil law). The app features 100 questions covering a wide range of topics, with detailed explanations provided for each answer. The questions are presented in a simple, one-question-one-answer format, making it easy to check your knowledge. The app is ideal for those looking to check their knowledge and improve their weaknesses, with a time limit of 60 seconds per question. With its efficient learning methods, this app is perfect for those looking to make the most of their free time and pass their exams.