Fitbit Co-Founders Launch Luffu, a Screenless Wearable for Family Health Monitoring

Luffu Unveils Screenless Wearable for Family Health Monitoring

The co-founders of Fitbit, James Park and Eric Friedman, have launched a new company called Luffu, an AI-powered family care system designed to expand health tracking beyond the individual to the entire family. The company, which started as an app in February and is currently in public beta, announced its first hardware product on Tuesday: the Luffu Link, a screenless health and safety band available for preorder in the US for people aged 13 and up.

According to a company backgrounder, the Luffu Link is a band that operates over 4G LTE, eliminating the need for a phone nearby to contact help or use features like voice logging for medications, meals, mood, symptoms, reminders, and notes. It also includes built-in GPS for location sharing and sending check-ins to family members. The device tracks sleep, activity, heart rate variability, resting heart rate, calories burned, and breathing rate. AI uses this data to learn patterns and alert users to changes, and any health information logged is organized by AI and added to the family’s app, where users can also create profiles for pets to log medications, meals, and vet visits.

The Luffu Link features a single button: press and hold for voice logging, and press twice to send a check-in to selected family members. Families decide what information gets shared and with whom. The device has up to five days of battery life, water resistance up to 50 meters, and is compatible with Android 14 or later and iOS 18 or later. It is available in halo gold, onyx black, and sterling blue, and comes with a quick charger and silicone bands in multiple sizes.

The Luffu Link is priced at $250 for preorders, with an expected price of $300 after that. It is expected to start shipping in early 2027. The company is also planning a home device for coordinating care across generations and households, expected to be announced later this year.

Founders’ Vision and Design Philosophy

James Park said in an interview that the Luffu Link and the accompanying app are designed to help families coordinate care for family members. “We’ve seen location tracking, family calendars, fitness devices, emergency pendants and smart home tools. But at the end of the day, someone still has to manually piece all of these features together,” Park said. “Many artificial intelligence [AI] agents focus on consumer tasks like booking travel or restaurants, but we wanted to build an integrated ecosystem for the family that directly supports safety and care coordination.”

Park also noted that the design philosophy from Fitbit, including privacy controls, carries over to Luffu. The company aims to prioritize a jewelry-like design over the clunky appearance of traditional medical devices. The Luffu Link’s slim metal core and silicone band are designed to be discreet and wearable.

The Luffu app, which went into beta testing earlier this year, will launch broadly in the US later this year. It will offer a family plan covering up to four people for $20 per month and an extended family plan covering up to eight people for $30 per month.