Investment Overview
SIIFIC Wellness Fund has subscribed to convertible bonds issued by Personal Health Tech (PHT), a pioneering digital healthcare company delivering innovative solutions through PHR-based health information management. From its “LogSil” app for companies to “Kensapo” for health checkups and industrial physician referrals, PHT is redefining how enterprises approach employee wellness. With a particular strength in supporting small and medium-sized enterprises, PHT is poised to extend comprehensive health management across businesses of all scales. This investment is expected to accelerate Japan’s transition toward a prevention-centered society and raise wellness literacy nationwide.
Through this partnership, SIIFIC Wellness Fund will not only provide capital but also deliver hands-on management support and impact measurement and management (IMM), furthering its mission to create a society where everyone can live better.
With a mission to “deliver innovative healthcare solutions through digital technology,” PHT has built a robust healthcare ecosystem designed to extend healthy lifespans and promote preventive medicine. By leveraging Personal Health Records (PHR), PHT unifies health, medical, and nursing care information. Its flagship app LogSil offers enterprises a one-stop solution for health checkup digitalization, online consultations, and educational content, while Kensapo provides seamless health checkup administration and industrial physician referrals – helping organizations detect early health risks, curb medical costs, and boost workplace efficiency.
Investment Rationale: A Shared Vision for Prevention and Wellness
The SIIFIC Wellness Fund focuses on “products and services that encourage positive and diverse lifestyle activities,” one of the four core themes of its investment strategy.
Japan’s aging population and shrinking workforce have heightened the urgency of maintaining every worker’s health. Government data shows that small and medium-sized enterprises, which make up the majority of domestic businesses, lag significantly behind larger corporations in statutory health checkups and stress testing.
PHT addresses this gap with distinct advantages: strong cost performance, foreign-language support, and digital transformation tools for health checkups and human capital management. Of particular note is Kensapo for Business Light, designed for companies with as few as 10 to 30 employees – an innovation that expands access to health management infrastructure. SIIFIC Wellness Fund believes widespread adoption of these services will accelerate the shift toward a prevention-centered society and significantly enhance wellness literacy across Japan.
Investment Decision Process
The SIIFIC Wellness Fund employed its impact management system to assess the potential of PHT, including system mapping analysis (Figure 1) to evaluate PHT’s potential effect on raising wellness literacy and Theory of Change (Figure 2), to visualize its expected impact.
- System Mapping Analysis (Figure 1)
- Using systems thinking, the fund assessed PHT’s contributions to wellness literacy, confirming clear differentiation through superior cost performance, multilingual support, and comprehensive service design.
- Projected P&L simulations validated the company’s growth path and PHR data collection strategy.
2. Theory of Change (Figure 2)
Projected Impact
Short-term: Increased adoption among SMEs (<50 employees) and higher rates of health management certification.
Medium-term: Improved compliance in follow-up diagnostics, higher employee engagement, and reduced staff turnover.
Long-term: Reduced prevalence of adverse health indicators across client organizations.
Comment from Tetsuya Nitta, CEO of PHT
We are greatly honored by SIIFIC Wellness Fund’s investment decision. Through “Kensapo,” our company has been working to streamline corporate health management and realize a society where people can work healthily. With this funding, we will establish a business foundation for further expansion. We will also reach out to small and medium-sized enterprises and individual markets, continuing to contribute to improving the wellbeing of society as a whole as an infrastructure company that supports health.
Future support
Going forward, SIIFIC Wellness Fund will provide strategic management guidance to PHT while monitoring social impact metrics – part of the fund’s broader mission to transform wellness systems and create a more equitable society.
About Personal Health Tech Co., Ltd. (PHT)
- Established: February 17, 2022
- CEO：Tetsuya Nitta
- Headquarters: 2-2-3 Minami-Honmachi, Chuo-ku, Osaka City, Osaka Prefecture, Honmachi UNICO Building 2F
- Employees: 56
- Overview: Personal Health Tech, based in Osaka, offers a digital healthcare ecosystem designed to extend healthy lifespans through preventive medicine. The startup centralizes health data management via PHR technology while providing enterprises with “LogSil,” a comprehensive health management application, and “Kensapo,” which streamlines health checkup administration and industrial physician services. Their integrated approach reduces administrative burdens while promoting employee wellness.
- Website: https://ph-tech.jp
About SIIF Impact Capital, Inc. (SIIFIC)
- Established: September 8, 2022
- Representatives: Kazuhiro Umeda and Reiri Miura
- Business: Impact investment fund management
- Current Fund: SIIFIC Wellness Fund, focusing on innovative startups in the wellness domain that aim to generate measurable positive social and environmental impact alongside financial returns.
- Website: https://siific.co.jp/
About SIIF
Founded in 2017 (with roots in the Nippon Foundation’s impact investment research from 2013), SIIF has since promoted impact investing in Japan through research, advocacy, partnerships, and policy engagement. Activities include co-hosting study groups with the Financial Services Agency, publishing reports on impact investment, and convening the GSG National Advisory Board in Japan. SIIF continues to work toward a society where social and economic resources circulate across public, private, and civic boundaries to address Japan’s most pressing challenges.
- Website: https://www.siif.or.jp/
