Rapid Line, Inc. (Poland) is a development stage company, which engages in the provision of online learning service and additional play-based studying in a form of quiz tool according to a school program available from anywhere using the phone and internet connection. The company is headquartered in Warsaw, Woj. Mazowieckie. The company went IPO on 2023-10-04. The firm is engaged in providing a useful and effective type of online learning service, additional play-based studying in a form of quiz tool according to a school program available from anywhere using the phone and Internet connection. Its online service provides high quality, fundamental, comprehensive additional education through its mobile application KIDWIN for Android and iOS mobile OS. The firm is focused on offering its services to children and their parents in Poland and some other European countries in different languages. The company also offers play-based studying that addresses the educational and personal development of children from 7 to 16 years old through purposeful quizzes. The firm offers subjects, such as astronomy, biology, chemistry, geography, history, informatics, logic, mathematics, physics, and religious studies.