Fitbit helped convince millions of people to start tracking their own health.
Now its founders want to help people track the health of the people they care about.
Fitbit co-founders James Park and Eric Friedman have launched Luffu Link, a screen-free health and safety wearable designed around family caregiving, independent older adults, and people trying to keep an eye on aging parents without constantly calling or checking in on them.
The new wearable is part of Luffu, the founders’ new AI-powered family health company.
And while Link can track many familiar wearable metrics—activity, sleep, heart rate and HRV—the bigger idea isn’t another Fitbit.
It’s creating an AI-powered health and safety system for an entire family.
The wearable combines continuous health tracking with built-in GPS, LTE connectivity, voice logging, location sharing, check-ins, and emergency messaging. That information feeds into Luffu’s AI platform, which is designed to learn what’s normal for individual family members and identify potentially meaningful changes over time.
For anyone who has ever wondered whether Mom took her medication, whether Dad’s activity has suddenly dropped, or whether an aging parent made it home safely, Luffu is essentially trying to build technology that can answer those questions without making someone feel like they’re under constant surveillance.
What Is Luffu Link?
The Luffu Link is an LTE-connected health and safety band expected to begin shipping in early 2027.
At first glance, it looks more like a bracelet than a smartwatch.
That’s intentional.
There is no screen.
Instead, Luffu Link is designed to quietly collect health information in the background while giving users a few simple ways to communicate with family members when necessary.
The device tracks:
- Activity
- Steps
- Sleep
- Heart rate
- Heart-rate variability
- Breathing rate
But that’s only part of the system.
Built-in GPS allows location sharing with trusted family members. LTE connectivity means certain safety features can continue working even when the user’s smartphone isn’t nearby. And a physical button provides a simple way to interact with the device.
Hold the button and you can record a voice update.
Double press it and you can send family members a quick check-in letting them know you’re okay.
In an emergency, the device can send a help request to predetermined contacts along with useful contextual information such as the person’s location.
It’s somewhere between a Fitbit, an AI health assistant and a modernized medical alert bracelet.
But Luffu is trying to make the experience feel less clinical than that description sounds.
Why Fitbit’s Founders Built It
The idea behind Luffu came partially from Park and Friedman’s own experiences caring for their families.
After years spent building technology around individual health at Fitbit, their lives increasingly involved keeping track of parents, children and other family members.
Park has discussed trying to coordinate his mother’s health care from across the country, navigating different health portals and providers while dealing with incomplete information from doctor visits.
He didn’t want to constantly call his mother asking for updates.
She didn’t want to feel constantly monitored.
That tension became one of the problems Luffu is attempting to solve.
The timing is significant.
According to AARP’s 2025 Caregiving in the U.S. research, approximately 63 million Americans—or nearly one in four U.S. adults—are family caregivers.
That’s roughly 20 million more caregivers than in 2015.
Nearly one in three caregivers are also raising children while caring for an adult loved one, creating what has become known as the sandwich generation.
Technology has become incredibly sophisticated at tracking an individual’s health.
Family health management remains much more fragmented.
Luffu wants to connect those worlds.
The AI May Be More Important Than the Wearable
Luffu Link is the physical product, but the company’s more ambitious idea is happening behind the scenes.
The wearable feeds information into the Luffu App, an AI-powered platform designed to organize health information across an entire family.
Instead of simply showing a graph of Dad’s steps, the system is intended to understand his normal activity patterns.
If his activity suddenly decreases, Luffu could recognize the change.
If his sleep simultaneously changes after starting a new medication, the platform could potentially connect that information and surface it to the family.
That’s a major philosophical difference from traditional health tracking.
James Park spent years helping design health dashboards at Fitbit. With Luffu, he says the goal isn’t to give families another collection of charts.
The questions are more practical:
What changed?
Does it matter?
Does somebody need to know?
The company’s AI is designed to organize information coming from wearables, medical information and things family members log themselves, then identify potentially meaningful patterns.
That could be particularly useful for aging parents.
Small changes in activity, sleep, medication adherence or behavior may not seem significant individually.
Looking at them together can provide considerably more context.
You Can Literally Talk to the Bracelet
One of Luffu Link’s more unusual features is AI voice logging.
Instead of opening an app and manually entering health information, the wearer can press the device’s button and speak.
For example:
"I took my blood pressure medication."
"My knee has been hurting today."
"I didn’t sleep well last night."
"I have two pills left."
The recording is sent to Luffu, where the AI can organize the information and incorporate it into the person’s broader health history.
That creates an interesting bridge between quantitative and qualitative health data.
Wearables are excellent at collecting numbers.
Heart rate: 67.
Steps: 4,832.
Sleep: 6 hours and 42 minutes.
But they don’t automatically know that someone felt dizzy after lunch or forgot a medication.
Voice logging allows users to add that missing context without navigating menus or typing into a smartphone.
For older adults who may not want to interact with another complicated app, that simplicity could be one of Link’s most important features.
It’s Also a Safety Device
Luffu isn’t positioning Link solely as a health tracker.
The device contains built-in GPS and 4G LTE-M connectivity, allowing certain features to work without a nearby smartphone.
Wearers can share their approximate location with trusted contacts and send check-ins.
If something more serious happens, they can also request help.
For example, someone who falls while walking could use the device to send a voice message explaining what happened. Their family could receive that message alongside information including their location and available health context.
There is an important limitation here.
Luffu states that Link does not directly call 911 or dispatch emergency services. Help messages go to preset contacts, and connectivity depends on cellular availability.
So this isn’t necessarily a direct replacement for every dedicated medical alert system.
Instead, it occupies an interesting middle ground between a traditional health wearable and a family safety device.
“Guardian, Not Surveillance”
A wearable designed to track aging parents immediately raises an obvious concern.
At what point does caregiving become surveillance?
Luffu appears very aware of that problem.
The company’s philosophy is described as "guardian, not surveillance."
Users control what information gets shared and who can access it.
That’s important because the device is being marketed partly around independence.
An aging parent may want their children to know that they’re safe without wanting to receive three phone calls every day asking where they are, whether they took their medication and why they haven’t moved much.
The ideal version of Luffu works quietly in the background.
Nothing unusual happens?
Nothing needs to happen.
Something meaningful changes?
That’s when the system becomes useful.
That philosophy could become increasingly important as AI health monitoring expands beyond individuals and into families.
A Wearable Designed for Aging Without Looking Like One
Design could also prove important.
Traditional medical alert devices can carry a stigma.
A large emergency pendant around someone’s neck immediately communicates that the wearer may be elderly, vulnerable or medically fragile.
Luffu deliberately moves away from that aesthetic.
The device is screenless, thin and available in Halo Gold, Onyx Black and Sterling Blue, giving it an appearance closer to jewelry than a medical device.
It is also water resistant up to 50 meters and offers up to five days of battery life depending on usage.
For older adults, that could matter almost as much as the technology.
The best safety wearable isn’t particularly useful if someone refuses to wear it.
How Much Does Luffu Link Cost?
Luffu Link is currently available for preorder for $249.99, discounted from an expected $299.99 price, with shipping currently planned for early 2027. Pricing and shipping dates remain subject to change.
A Luffu Family Plan subscription is also required.
The company currently says its standard Family Plan, supporting up to four members, is expected to cost $19.99 per month, while an Extended Family Plan supporting up to eight members is expected to cost $29.99 per month. Those details are also subject to change before launch.
The subscription component makes more sense when Link is viewed not as a standalone tracker but as one part of a broader family health platform.
Luffu is already teasing another smart device designed to bring its family intelligence system into the home.
The bigger vision appears to be clear:
Phone + wrist + home.
The Bottom Line
Fitbit was built around a relatively simple idea:
Give people better information about their own bodies.
Nearly two decades later, its founders are asking a different question.
What happens when the person whose health you’re worried about isn’t you?
Luffu Link represents a potentially important evolution of the health wearable.
It still counts steps.
It still tracks sleep.
It still measures heart rate.
But those measurements aren’t necessarily the end product anymore.
They’re pieces of a larger AI-powered picture designed to help families understand whether an aging parent’s routine has changed, whether someone needs help or whether everything is simply okay.
There are important questions still to answer. Luffu Link hasn’t shipped yet, its AI insights will need to prove useful in the real world, and families will have to decide how much health and location information they’re comfortable sharing.
But the underlying problem is very real.
America has tens of millions of family caregivers, and many are trying to coordinate care using phone calls, texts, patient portals, calendars, spreadsheets and memory.
Fitbit helped turn the wearable into a tool for understanding yourself.
With Luffu, its founders are betting the next generation of wearables could help us look after each other.
Luffu Sits Somewhere Between a Fitness Tracker and a Medical Alert Device
Wearable health technology has already moved far beyond basic step counting. As Vital Report covered in its guide to the Best Smart Rings of 2026, devices now track metrics such as sleep, heart rate variability, recovery, stress and activity around the clock.
Luffu takes that evolution in a different direction. Instead of focusing entirely on the person wearing the device, its value proposition centers on helping families understand changes in the health, routines and safety of the people they care about.
Luffu Link isn’t entering an empty market.
The wearable industry already includes devices capable of tracking sleep, heart rate, activity, recovery, location, and even potential emergencies. But most of those products were designed with a very different primary user in mind.
WHOOP is built heavily around performance, strain, sleep, and recovery. Oura packages similar health and recovery tracking into a smart ring. Apple Watch has expanded beyond fitness into broader health and safety features including Fall Detection and Emergency SOS.
On the other end of the spectrum are products specifically designed around older adults and emergencies.
Life Alert helped popularize the medical-alert wearable decades ago with its recognizable emergency button, while companies like Medical Guardian now offer mobile medical-alert devices with GPS, fall-detection options, and caregiver-focused safety features.
Luffu essentially sits between these two categories.
It has the passive health sensing you would expect from a modern fitness wearable, but combines it with GPS, LTE connectivity, family check-ins, voice logging, and the ability to request help from trusted contacts.
That’s why Luffu may be better understood as a family-care wearable rather than another fitness tracker.
The distinction is important.
WHOOP wants to tell you how recovered you are.
Oura wants to help you understand your sleep and readiness.
Apple Watch wants to function as a broad health, communication, and smartwatch platform.
Traditional medical-alert companies primarily focus on getting someone help when something goes wrong.
Luffu is trying to understand what’s happening between those moments.
From Life Alert to AI-Powered Family Care
In some ways, Luffu Link represents the modern evolution of an idea that has existed for decades.
Medical-alert systems such as Life Alert were built around a straightforward problem:
What happens if an older adult needs help and nobody is around?
Luffu asks a broader question:
Can technology recognize that something may be changing before an emergency happens?
The difference comes from data.
Instead of waiting for someone to press an emergency button, Luffu continuously gathers information including activity, sleep, resting heart rate, HRV, and breathing rate.
Then it adds another layer of context through voice logging.
An aging parent could tell the device:
"I didn’t sleep well last night."
"I took my medication."
"I’ve been feeling dizzy today."
That information can then exist alongside physiological and behavioral data.
If someone’s activity simultaneously falls, sleep changes, and they report feeling unwell, Luffu’s AI potentially has much more context than a traditional emergency pendant would.
That doesn’t make Luffu a replacement for emergency medical services or dedicated medical-alert systems. The Link’s help feature contacts predetermined trusted contacts rather than directly dispatching 911.
Instead, it shows how the category may be evolving from reactive safety technology toward continuous family health monitoring.
The Competition Is Getting Bigger
Luffu also arrives as major technology companies increasingly expand into health monitoring.
Apple Watch has become one of the most recognizable examples. Features including Fall Detection can identify a hard fall and, under certain circumstances, help connect the wearer with emergency services. Apple has also continued expanding health monitoring across heart health, sleep, activity, and other areas.
Meanwhile, recovery-focused wearables such as WHOOP and Oura have demonstrated how much health information can be collected passively from relatively small devices.
The emergence of screenless fitness trackers makes Luffu’s design even more timely. The market is increasingly embracing wearables that operate quietly in the background rather than demanding constant interaction.
But Luffu’s target customer is fundamentally different.
It isn’t necessarily the marathon runner trying to maximize recovery.
It’s the daughter wondering whether her 76-year-old father is okay at home.
It’s the son managing medications and appointments for a mother who lives three states away.
It’s an older adult who wants independence but also wants a simple way to contact family if something goes wrong.
That gives Luffu a potentially valuable position between consumer health wearables and elder-care technology.
Why Luffu Could Be Different
Luffu’s biggest competitive advantage may not actually be its hardware.
It’s the family layer.
Most wearables are fundamentally built around one user.
Your Apple Watch.
Your Oura Ring.
Your WHOOP.
Your health dashboard.
Luffu starts with a different assumption: health often becomes a shared responsibility.
That becomes especially obvious as parents age.
One sibling may handle doctor’s appointments.
Another may manage medications.
Another may live closest and handle emergencies.
Meanwhile, the parent may be using an Apple Watch, blood-pressure monitor, prescription apps, patient portals, and other disconnected systems.
Luffu wants to become the layer connecting that information.
That’s considerably more ambitious than simply building another wristband.
And it’s what makes Fitbit founders James Park and Eric Friedman’s return to wearables particularly interesting.
They already helped build one of the companies responsible for making personal health tracking mainstream.
This time, they’re betting that the next major opportunity isn’t tracking yourself.
It’s using technology to help take care of the people around you.