경찰수첩 is a free Android application developed by 주조은소프트. It falls under the category of Business & Productivity, providing a wide range of features and information that can be useful not only for police officers but also for the general public.

One of the main features of 경찰수첩 is the ability to measure one's blood alcohol concentration (BAC) in order to raise awareness about the dangers of drunk driving. The app also provides various calculation formulas, such as skid mark calculation, percentage calculation, area conversion, remaining time calculation, and more.

Additionally, 경찰수첩 offers information on legal regulations, connecting users to the website of the law enforcement agency. Users can find details about minor criminal penalties, license suspension periods, administrative remedies, traffic violations, and penalties for drunk driving accidents. The app also includes information on police duties, training institutes, reward and punishment systems, age comparison charts, police stations across the country, promotion exams, and important contact numbers.

Overall, 경찰수첩 is a comprehensive tool that aims to assist both police officers and the general public in their daily lives. For any additional features or information, users are encouraged to contact the developer directly.