Fitbit founders launch AI platform to help families monitor their health

Fitbit co-founders James Park and Eric Friedman have announced the launch of a new AI-driven startup, Luffu, designed to help families proactively monitor and manage their health. The founders describe Luffu as an “intelligent family care system” that will begin as a mobile app and later expand into dedicated hardware devices.

Roughly two years after exiting Google, Park and Friedman are turning their attention to the growing burden of caregiving and betting that AI can help reduce the mental load it places on families. According to a recent report, around 63 million people — nearly one in four adults in the United States — are family caregivers, representing a 45% increase over the past decade.

Luffu relies on AI running in the background to collect and organise family-related information, learn daily routines and patterns, and flag meaningful changes. The goal is to help families stay aligned and respond earlier to potential health or well-being concerns.

“At Fitbit, we focused on personal health—but after Fitbit, health for me became bigger than just thinking about myself,” Park said in a press release. “I was caring for my parents from across the country, trying to piece together my mom’s health care across various portals and providers, with a language barrier that made it hard to get a complete, timely context from her about doctor visits. I didn’t want to check in constantly, and she didn’t want to feel monitored. Luffu is the product we wished existed—to stay on top of our family’s health, know what changed and when to step in—without hovering.”

The founders argue that while today’s consumer health technology market is packed with tools designed for individuals, real-world health management is often shared among partners, children, parents, pets, and caregivers. As a result, critical information is frequently fragmented across apps, devices, online portals, calendars, email attachments, spreadsheets, and even paper records.

Luffu aims to centralise that information in one place. Through the platform, families will be able to track details such as health metrics, diet, medications, symptoms, lab results, doctor appointments, and more. Users can log information using voice input, text entries, or photos. The system then continuously monitors for changes and surfaces relevant insights and alerts, including irregular vital signs or shifts in sleep patterns.

Park and Friedman told Axios that Luffu will also allow users to ask questions in plain, conversational language about their family’s health. Examples include queries like, “Is Dad’s new meal plan affecting his blood pressure?” or “Did someone give the dog his medication?”

“We designed Luffu to capture the details as life happens, keep family members updated and surface what matters at the right time—so caregiving feels more coordinated and less chaotic,” Friedman said in the press release.

People interested in trying the platform can now sign up for a waitlist to access Luffu’s limited public beta.