Cubec, a clinical knowledge AI developed for physicians in Japan, is now available as a free mobile application for both iOS and Android devices. Cubec Inc., based in Osaka, announced the launch on October 8, 2026 to help doctors access evidence based answers during short breaks in their clinical routines. Since the web version debuted in May 2025, the platform has registered more than 2,500 physicians across a wide range of specialties.
Responding to Physician Workflow Demands
The mobile launch follows strong demand from doctors who want to check clinical questions between outpatient consultations and hospital shifts. Company data shows that around 70% of web platform usage occurs on weekdays between 8:00 a.m. and 6:00 p.m., reflecting its role during core clinical hours. The smartphone app is designed for these time constrained moments by allowing one tap access from a home screen.
Mobile Features and Response Modes
The app retains the web version's three response modes, named Fast, Reasoning, and Paper, so clinicians can choose the depth of information that suits their situation. Its interface has been optimized for smartphone screens to support smooth question and answer exchanges during examinations, overnight shifts, and home visits. Each mode is intended for different levels of inquiry, from quick checks to more detailed research.
Evidence Sources and Guideline Alignment
Cubec draws on specialist reviewed medical notes, PubMed, and Japanese pharmaceutical package inserts. The company says its medical notes are supervised by physicians and include disease specific checkpoints as well as essential clinical guidance drawn from domestic guidelines and the latest evidence. This design is intended to reduce AI hallucinations and give doctors evidence based answers that are safer for clinical use.
Leadership Perspective
Keita Saku, a physician and Cubec director of medical supervision, said that no doctor can deeply understand every condition encountered in daily practice. He explained that moving from not knowing to understanding can directly influence care quality, especially outside a physician's specialty. According to Saku, Cubec stores the knowledge and experience of many doctors as a free AI service for physicians, including specialist supervision of paid clinical guideline content.
Free Access and Ongoing Development
Cubec is offered at no cost to physicians and is positioned as a clinical partner for everyday practice. The company plans to expand its medical notes and improve answer accuracy based on feedback from doctors in fields such as cardiology, nephrology, obstetrics and gynecology, and respiratory medicine. These updates will be driven by the goal of creating a service that supports the best possible care for every patient.
Company Background and Mission
Cubec Inc. was founded in February 2023 and is located inside the National Cerebral and Cardiovascular Center in Suita, Osaka. In August 2024 the company became the fourth venture recognized by the center, and its mission is to put the best medical care in everyone's hands. The leadership team includes Chief Executive Officer Shinsuke Okui, Chief AI Officer Nobuhiko Niida, and physician Director Keita Saku.
The free Cubec app represents a practical step toward integrating evidence based AI into everyday clinical decision making. By prioritizing mobile usability and alignment with Japanese guidelines, the company is targeting the real time needs of busy physicians. As adoption grows, Cubec plans to keep refining the platform with its clinical community to support safer and more efficient patient care.