mutex Inc.

Based in Japan, mutex Inc. delivers software solutions that enhance information transfer, focusing on healthcare applications to improve operational efficiency and address industry challenges. mutex Inc. is a software development company founded in 2022 and headquartered in Tokyo, Japan.

The firm specializes in innovative software solutions for the healthcare sector and has completed one deal to date. The company raised JPY 60 million in Seed funding from MTI Co. , Ltd. in December 2025, bringing the total amount raised to JPY 60 million.

The founder's history and other affiliations were not provided. mutex specializes in developing software solutions that facilitate seamless information transfer across various sectors. Their core product, Reze, is an AI-driven application tailored for healthcare, automating the processing of medical receipts and enhancing operational efficiency. By leveraging advanced artificial intelligence and machine learning, Reze addresses issues like labor shortages and digital transformation in healthcare facilities.

In addition to Reze, the company offers application development and UI/UX design services for a variety of clients including publicly listed firms and educational institutions, primarily within Japan. mutex generates revenue through a structured transactional model involving B2B partnerships and direct client engagements. Their flagship product, Reze, is expected to operate on a subscription basis, granting clients ongoing access to its functionalities. The company engages with various clients, including hospitals and educational institutions, often through multi-year contracts.

Moreover, their application development services are billed based on project scope, creating a flexible pricing structure. The combination of subscription fees for Reze and service fees forms the company's revenue model. In December 2025, mutex Inc. raised JPY 60 million in Seed funding from MTI Co.

, Ltd. The funds will be utilized to strengthen product development and organizational structure. The company plans to enhance its Reze application further and aims to expand its market reach beyond Japan in the coming years, targeting additional regions as part of its growth strategy.