The World's First Social Health Tracker

You track everything.
Except the thing
that matters most.

Junto is the world's first social health tracker. Log your social interactions in 30 seconds and connect Apple Health or Google Health Connect to bring in your biometric data. Your social battery, finally measured.

Get early access See how it works
+27
Battery points
this month
82%
Gym sessions
recharge you most
Tuesday
72
Battery
Your battery is good
4 interactions this week
This week
M
T
W
T
F
S
S
💡 Today's insight
Your gym visits recharge you more than planned meetups. A familiar environment is your sweet spot.
50%
Increased mortality risk from social isolation
Holt-Lunstad, PLOS Medicine 2015
58%
of adults report feeling lonely some or all of the time
Cigna US Loneliness Index, 2020
15×
cigarettes per day is the equivalent health impact of loneliness
BYU Research, Holt-Lunstad 2010
0
apps currently tracking social health with biometric data
The gap Junto fills
Longevity science

The original
biohack.

You optimise your sleep. You track your HRV. You measure your VO2 max. But the single lifestyle factor most consistently linked to living longer and better has no tracking tool. Until now.

Social connection outperforms diet, exercise, and even genetics as a predictor of lifespan. The Harvard Study of Adult Development tracked 700 people for 85 years and reached one unambiguous conclusion: the quality of your relationships determines the quality of your aging.

🧬
Outperforms genetics
Strong social connections predict longevity more reliably than your genetic profile, according to data from the MacArthur Study on Successful Aging.
❤️
Direct cardiovascular benefit
Positive social interactions activate the vagal nerve, reduce cortisol, lower blood pressure, and increase HRV. The physiology is measurable and well-documented.
🧠
Protects cognitive function
Socially connected adults show 64% lower risk of clinical dementia. Social engagement is one of the few lifestyle factors shown to slow cognitive decline.
The four pillars of longevity
🥦
Nutrition
Tracked by MyFitnessPal, Cronometer
✓
💤
Sleep
Tracked by Oura, Whoop, Apple Watch
✓
🏃
Exercise
Tracked by Garmin, Apple Watch, Fitbit
✓
🤝
Social connection
The most predictive of all four. Now tracked by Junto.
✦
"Social connection is not a luxury or a nice-to-have. It is a biological need with measurable consequences for health span and lifespan."
Dr. Peter Attia, Outlive: The Science and Art of Longevity
How it works

Three layers.
One clear picture.

Junto combines Apple Health and Google Health Connect biometric data with simple interaction logging to build personal social health intelligence that no app has ever offered before.

01
📲
Track
Log social interactions in 30 seconds. Four modes cover everything from a deep one-on-one to a smile at the gym. Connect Apple Health or Google Health Connect to bring in your HRV, sleep, and stress data automatically.
02
🧠
Understand
Over 30 to 60 days, Junto builds a personal social profile unique to you. Which interactions energise you? Who drains you? Which environments recharge you fastest? Your data tells the story.
03
⚡
Act
Junto gives you timely, personal recommendations based on your actual data. Not generic wellness advice. Specific insights about your social patterns and what to do about them right now.
Features

Everything your social health
has been missing.

⚡
Social Battery Score
A real-time 0–100 score reflecting your current social energy level, calculated from your interaction history and biometric data from Apple Health or Google Health Connect.
📊
Biometric Integration
Connects to Apple Health and Google Health Connect, the health hubs that aggregate data from Apple Watch, Whoop, Oura, Garmin, Fitbit, and more. One connection, many devices covered.
🌐
Social World
Track the people, places, and patterns in your social life. See which contexts energise you and which drain you.
✨
Annual Social Wrapped
Your social year in data. Most energising people, peak moments, pattern shifts. Shareable and deeply personal.
🌿
Introvert-first design
Built for every energy style. Micro interactions, familiar environments, and quiet moments all count as social health data.
Insights
30-day battery trend
↑ +27 points this month
Most energising
🏋️
Morning gym
Place · 14 visits
94
👤
Sarah
Person · 1:1 walks
89
Monthly insight
You are an environment-based socialiser. Familiar places fuel you more than plans.
The science

Built on decades of
peer-reviewed research.

❤️
Heart Rate Variability (HRV)
Primary biometric signal
HRV is a validated measure of autonomic nervous system health. Positive social interactions increase HRV through vagal nerve activation. Draining interactions measurably suppress it. This relationship is documented across multiple peer-reviewed studies in Psychophysiology and the Journal of Affective Disorders.
Strong scientific support
😴
Sleep Quality
Recovery and lagging indicator
Sleep quality following socially demanding days is a documented pattern. Elevated sympathetic nervous system activation from draining interactions disrupts sleep architecture. Used as a lagging recovery signal in Junto, not a real-time measure.
Strong scientific support
📱
Screen Time & Movement
Passive behavioural signals
Screen time is a validated proxy for social withdrawal. Step count the day after an interaction is a meaningful energy signal. People who have had energising interactions move measurably more the following day. Both are available on every smartphone with no wearable required.
Solid scientific support
📊
Consumer Stress Scores
Directional signal, used with care
Garmin Body Battery, Fitbit Stress Score, and Samsung stress tracking are useful directional signals but proprietary, not clinically standardised. Junto uses them as supporting context rather than primary inputs, and is honest with users about this distinction.
Directional, used with context
⌚
Device Compatibility
How Junto connects to your wearable
Junto connects through Apple Health and Google Health Connect, the health hubs built into iOS and Android. Many wearables already sync their data into these hubs, so Junto can read your HRV and sleep data without a direct integration to each brand.
Via Apple Health
Apple Watch · Whoop · Oura · Garmin · Fitbit
Via Google Health Connect
Garmin · Fitbit · Samsung · Pixel Watch
No wearable? Junto works with interaction logging alone. Connect a device later for a more complete picture.
"
The clearest message that we get from this 75-year study is this: Good relationships keep us happier and healthier. Period.
Robert Waldinger
Director, Harvard Study of Adult Development
"
Loneliness is as damaging to health as smoking 15 cigarettes a day and more harmful than obesity.
Dr. Julianne Holt-Lunstad
BYU / PLOS Medicine Meta-analysis, 300,000 participants
Government recognition
🇬🇧 UK: World's first Minister for Loneliness (2018)
🇺🇸 US: Surgeon General Epidemic Advisory (2023)
🌍 WHO: Global Commission on Social Connection (2023)
🇯🇵 Japan: Minister for Loneliness (2021)
🇨🇦 Canada: Federal Social Connectedness Framework
Who it's for

Made for everyone.
Especially introverts.

Junto is not about socialising more. It is about socialising better, in ways that match your energy style, your lifestyle, and your actual needs.

🌿
The Introvert
You recharge alone. A smile at the gym, a chat with the barista, a familiar cafe. Junto counts all of it. Your social health is not about quantity. It is about quality and alignment with your energy style.
Micro interactions count
💼
The Busy Professional
You are surrounded by people all day and still feel empty. Junto helps you understand which interactions fill you and which deplete you, and helps you protect the ones that matter.
Quality over quantity
🏃
The Health Optimizer
You track everything: steps, sleep, HRV, nutrition. But your social life has no data layer. Junto gives you the missing metric that research consistently shows is most predictive of longevity.
The missing health metric
🌍
The New-to-the-City Adult
You moved somewhere new and your social life reset to zero. Junto helps you build self-knowledge about what kinds of connections and environments work best for you as you rebuild.
Build from the ground up
🧘
The Wellness-Aware
You invest in your physical and mental health seriously. You already track sleep, HRV, and movement. Junto adds the one dimension all your other apps are missing: how your social life affects everything else.
Complete your health stack
💛
The Recovering Isolator
Post-pandemic, post-burnout, or just post-a-very-hard-few-years. Junto meets you where you are with gentle, non-judgmental tracking that celebrates every small interaction as progress.
No pressure, just progress
Early access

Be among the
first to know.

Junto is in development. Join the waitlist and you will be among the first people to track your social battery when we launch.

No spam. Ever. Just a personal note when we're ready to launch.