Fitbit’s founders are back with an app designed to manage your whole family’s health

Luffu, a new app from Fitbit co-founders James Park and Eric Friedman, acts as a shared health hub for your entire household—partners, kids, aging parents, even pets—pulling scattered information into one place and using AI to flag what needs attention.

What it does

Luffu centralizes daily health details that typically live across a dozen different places: vitals, medications, lab results, doctor visits, diet, symptoms, and more. You can log information by voice, text, or photo—snapping a picture of a discharge summary, dictating a new prescription dose, or noting a child’s fever. The app organizes everything into a running picture of each family member’s health over time.

Background monitoring. Luffu’s AI watches for meaningful changes like missed medications, shifting sleep patterns, or unusual vitals, sending alerts before small issues become bigger problems. Think of it as a second set of eyes on details you’re already trying to track.

Plain-language Q&A. Ask questions about your family’s health in everyday language and get answers, insights, or visualizations you can save and share. No digging through charts or decoding medical jargon.

Shared access with guardrails. Invite family members and caregivers into the system and control exactly what each person can see or update. Everyone stays aligned without anyone feeling monitored.

A missing layer in health tech

onsumer health tech has made real progress when it comes to individual tracking. Today, consumers are good at counting steps, monitoring heart rate, and keeping tabs on sleep. Function and Superpower have also pushed biomarker tracking forward for individuals who want deeper insight.

But family health still runs on fragmented systems and mental load. Information lives across portals and notes app, making coordinating care exceptionally difficult—especially when you’re supporting aging parents from afar.

Luffu addresses that gap by focusing less on collecting new data and more on organizing what already exists. By creating shared visibility and flagging meaningful changes early, it reduces the cognitive load of caregiving and makes coordination feel intentional.

The bet here is that the next evolution of health tech isn’t another metric, but infrastructure for shared care.

How to get access

Luffu is launching as a mobile app, with plans to expand into complementary hardware down the line. The app is currently in limited beta. Join the waitlist at luffu.com.