Synapxe Tests AI Tool That Turns Healthier SG Exercise Plans Into Personalised Workouts

Singapore's national healthtech agency Synapxe is testing whether AI can bridge one of preventive care's oldest gaps — getting patients to follow through on what their doctor told them. The tool, called Health Plan AI, takes the exercise target agreed upon during a Healthier SG consultation and turns it into a day-by-day workout routine that fits the patient's schedule, preferences, and ability.

About 270,000 Healthier SG enrollees aged 40 to 64 who already have a health plan and no chronic conditions are eligible for the six-month beta, which runs through January 2027 on the HealthHub app and website. Users can tell the AI when and where they prefer to exercise, whether they want to work out alone or in a group, and what activities they enjoy. The system generates a weekly programme with suggested activities, instructions, and booking links to classes offered by the Health Promotion Board, People's Association, and Sport Singapore.

Behind the recommendations are three AI agents powered by Anthropic's Claude Sonnet model — each handling a separate stage of the pipeline. One agent finds suitable activities from approved sources, a second assembles the weekly programme, and a third reviews the result before it appears in HealthHub. Splitting the work into distinct stages allows each to be verified individually, avoiding the black-box problem of a single chatbot generating the entire plan unchecked.

Safety guardrails are baked into the system. The AI will not suggest a higher exercise intensity than what the doctor prescribed, even if a user asks for more. If someone reports pain and the system is unsure whether exercise is appropriate, it directs the user to seek medical advice instead of producing another routine. For now, the tool does not connect to wearable devices or track completed activities — users must log their own progress.

Why it matters for Singapore: With Healthier SG now covering over a million residents and caregiving manpower constraints tightening in Singapore's super-aged society, AI tools that automate the translation of clinical advice into actionable daily routines could meaningfully improve adherence rates. Synapxe's approach of using multiple specialised AI agents with clear safety boundaries — rather than a single general-purpose chatbot — sets a practical template for how public healthcare AI should be deployed in Singapore. If the beta succeeds, the model could expand beyond exercise planning into nutrition, medication, and other preventive care domains.