Nihon Kotsu as the "Prince of Taxis." The company was founded as a sole proprietorship in 1928 and reorganized as a stock company in December 1945. It began as a limousine operator and expanded to taxi service in 1940. NK operates the most popular taxi hailing mobile application in Japan, Japan Taxi. Toyota invested 500 million yen in the app in 2017, followed by a second 7.5 billion investment in 2018. Tokyo Musen, a major rival of Nihon Kotsu in the Tokyo area, joined the app later that year in an effort to counterbalance foreign rivals such as Uber and Didi Chuxing.
Shabbos App an indicator lights green when plugging in the phone will not immediately trigger charging it. The app was controversial in some Orthodox Jewish circles. Rabbi Moshe Elefant of the Orthodox Union and Rabbi Yair Hoffman both spoke out against the app. The Orthodox Union ran two opinion pieces against the app as well as another piece by Rabbi Ari Kahn which was also run by Aish.com. Rabbi Dr. Raphael Zarum, Dean of the London School of Jewish Studies wrote that the Shabbos App developers: "have found solutions to the halachic challenges of typing-writing, screen illumination, sound generation and battery drainage