Five Jack

Originally founded as Five Jack, Inc. in 2015, the company rebranded to PAY, Inc. in 2018 after succeeding the payment business of BASE, Inc. The company's core mission is to "make payments simpler" by providing a streamlined, developer-centric payment processing solution. Its primary service, PAY.JP, offers a robust API that allows businesses of all sizes in Japan to quickly and securely incorporate credit card payment functionalities into their online services.