Fitbit's founders launch Luffu Link, an LTE band for family caregivers

Why it matters

Park and Friedman are applying Fitbit's consumer-hardware playbook to family caregiving, where success depends on trusted alerts and household participation rather than another personal dashboard.

James Park and Eric Friedman, the co-founders who built Fitbit, launched Luffu Link on August 25th, a screenless LTE band designed to keep health data, location updates and family help requests moving when a phone is out of reach. The device is available for preorder at $249 and is expected to ship in early 2027, TechCrunch reported.

The hardware marks a return to familiar territory for Park and Friedman, who founded Fitbit in 2007 after previously building the photo-sharing service HeyPix and selling it to CNET. Their first Fitbit paired simple sensors with software that made personal activity visible. Google completed its $2.1 billion acquisition of Fitbit in January 2021.

Luffu grew from a different problem in the founders' own homes. Park has described trying to coordinate his parents' care from across the country while piecing together information held by different providers and navigating a language barrier. Friedman was balancing his children's health needs with support for a father who wanted to remain independent. The founders saw households managing medications, appointments and changes in behavior through phone calls, portals and memory.

Fitbit's founders widen the unit of care

Park and Friedman launched the Luffu family-health app on February 3rd. It accepts voice notes, text, photos, documents and data from connected health services, then uses AI to organize that information around family members. Luffu says the software can learn routines and flag changes such as missed medication, unusual vital signs or shifts in sleep and activity.

Axios described Luffu as self-funded in February. Luffu has not publicly disclosed its headcount, users, paying customers, revenue, annual recurring revenue or waitlist size. Park and Friedman described their product philosophy as "quiet most of the time, helpful at the right time."

Link gives that software a dedicated source of data and a direct line to the wearer. The band continuously collects activity, sleep, resting heart rate, calories burned, heart-rate variability and breathing rate. A wearer can press its button and record information about a symptom, meal, medication, mood or reminder. Luffu then adds the voice entry to the family's existing record.

The design echoes Park and Friedman's earlier hardware instincts. The original Fitbit had a single button and a display that stayed hidden until needed; the Fitbit Flex later removed the screen entirely. Link also stays out of the way until its wearer has something to record or needs assistance. Fitbit optimized the wrist for one person's goals. Luffu wants the wrist to feed a shared family record.

"It's about what Luffu does with that data," Park told TechCrunch. Luffu says its system can connect a new medication with later changes in sleep or activity, then bring that shift to a family's attention. Those promised insights will need to work reliably across different ages, routines, health conditions and wearing habits before families can depend on them.

A health band with its own connection

Link's cellular modem allows the band to work without a nearby phone or separate carrier plan. Built-in GPS can show trusted contacts where the wearer has been and notify them when the wearer enters or leaves designated areas. Two quick button presses send a routine family check-in.

A help request carries more context. The wearer can record a voice message, and Link sends it with location, battery status and selected health information, including heart rate and recent activity, to trusted contacts. Luffu is routing that assistance through the family network, which fits Park and Friedman's view of caregiving as a coordination problem shared by relatives.

Luffu is placing Link between several established categories. Apple Watch offers cellular connectivity, health sensing, location sharing and emergency features inside a general-purpose smartwatch. AngelSense sells cellular location and caregiver-alert products, while UnaliWear combines a watch form factor with fall detection and professional monitoring.

Luffu's pitch rests on bringing passive sensing, voice context, location and family records into one service. That combination can make a low-activity alert more useful if relatives also know the wearer started a medication or reported feeling unwell. It can also increase the amount of sensitive information a household must decide how to collect and share. How Luffu handles permissions will carry much of the product's trust burden.

The preorder sells a system

Link will have an expected retail price of $299, with the current preorder priced at $249. Axios reported on August 25th that cellular service is included, while Luffu also charges a $20 monthly family subscription.

That pricing reveals the business Park and Friedman are building. The hardware supplies recurring information, while the subscription turns those signals into a family service. Link loses much of its distinction if it becomes another wristband generating charts. Luffu's value depends on persuading several people to participate, set permissions, log context and keep paying for a shared record.

The founders have credibility in shipping consumer health hardware, and their Fitbit history shows how difficult simple wearables become at scale. Link adds cellular service, GPS, health sensing and family alerts to that equation, with safety expectations attached.

Luffu is also developing a home device called Luffu Frame, extending the same family intelligence beyond the wrist. The product line points toward a household health system spanning software, wearable sensors and an in-home interface.

Park and Friedman spent their first wearable company teaching people to check their own numbers. Their second asks families to decide when another person's numbers require attention. Link is the hardware needed to make that wager practical. Its early-2027 shipment will begin the harder part: proving that a family health network can reduce caregivers' mental load without creating a new stream of alerts to manage.