Fitbit Founders Launch Luffu, an AI-powered Hub for Family Health

Luffu’s AI establishes household-specific baselines and flags deviations that may indicate emerging concerns.

Fitbit co-founders James Park and Eric Friedman have launched Luffu, an AI-powered family health platform designed to help households collectively track health data, detect early warning signs, and manage caregiving needs through a single, shared digital hub.

The launch comes nearly two decades after Park and Friedman helped popularize wearable fitness tracking with Fitbit, a company that reshaped how individuals viewed personal health data.

After Google acquired Fitbit, both founders stepped away and have later returned with a broader view of health, one that reflects the realities of caregiving, shared responsibility, and multi-generational households. Luffu is built around the idea that most health technology remains centred on individuals, while real-world health decisions are often made collectively.

Families today juggle information across patient portals, lab reports, prescriptions, calendars, messages, and conversations, creating a fragmented experience that increases stress rather than clarity. Luffu aims to consolidate this sprawl into a single AI-driven system that quietly organizes, interprets, and monitors health information across children, adults, older parents, and even pets.

“At Fitbit, we focused on personal health- but after Fitbit, health for me became bigger than just thinking about myself,” said James Park, Co-founder of Luffu.

The platform begins as a mobile app, currently available in a limited public beta, and allows families to log health data using voice, text, or photos, such as prescription labels or symptoms. The AI tool can also connect with wearables and health portals to build a longitudinal view of daily routines, medications, sleep patterns, vitals, and appointments.

Rather than relying on generic thresholds, Luffu’s AI establishes household-specific baselines and flags deviations that may indicate emerging concerns.

This “quiet AI” approach differentiates Luffu from chatbot-style health assistants. The system is designed to operate continuously in the background, surfacing insights only when necessary, while still allowing users to ask natural-language questions about trends or changes.

According to the company, the goal is to reduce the mental burden placed on family caregivers by automating pattern recognition and follow-up.

The product reflects a growing demographic shift. In the U.S. alone, an estimated 63 million adults act as family caregivers, a figure that has increased sharply over the past decade. Many belong to the so-called sandwich generation, balancing childcare while supporting ageing parents from a distance.

Park has cited his own experience coordinating parental care across multiple systems as a key motivation behind Luffu’s design.

"In our house, health isn't a single person's project; it's shared, and I've felt how easy it is for my own health to fall to the bottom of the list," said Eric Friedman, Co-founder of Luffu.

While Luffu currently exists as an app, the founders have confirmed plans to expand into first-party hardware, suggesting future devices or ambient sensors that could further automate data collection.

The company has emphasized user control, privacy, and consent, noting that families will decide what data is shared and whether it contributes to AI model training. Monetization details have not yet been disclosed.

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