All of you, in one place

A mirror that learns.
Your mood, energy, and focus, in one model.

Connect your sleep, mood, calendar and more, and Meridian shows you the patterns across them. Not another tracker or journal, but one model that understands the whole picture.

Meridian. The app that learns you, inward.

Now in beta, opening in small waves. Your data stays yours, always.

You're on the list. We'll reach out when your wave opens. Welcome.

The problem

The thing that would explain how you feel is sitting in an app that can’t see it.

Your body knows you slept badly. Your journal knows you’ve felt low. Your calendar knows it was a brutal week. But none of them talk, so the pattern that ties it all together never reaches you.

You’re left guessing about your own life, with all the evidence already collected and scattered across a dozen apps that each see one sliver.

Right now, each part of you lives in a different app:

Mood a journaling app Energy your sleep tracker Focus your notes & saves Calm a meditation app Connection your messages

What it is

All of you. The whole picture.

Meridian puts you at the centre and connects every part of your life to you, and to each other. What matters lives in the connections: how your mood, energy, and world move together over time. Built around your own signals, not anyone else's playbook.

Mood Energy Focus Calm Connection

How it works

The check-in takes five seconds.

One gesture on a single field (where's your mood, where's your energy) and it's saved. No forms, no scores, no streaks to protect. The moment you log, Meridian reflects your body back to you. You can also log a drink with a single tap. No counts, no judgment; just one more thread the patterns can read.

And when a day runs tight, Meridian offers a short breathing break: a slow point of light to follow, a longer breath out than in, nothing to chase. The session becomes one more thing the mirror knows about you.

One gesture Auto-saved Pays you back instantly
Mood Energy Focus Calm Connection
Mood 4 · Energy 2 Mood → Energy → Energy 2 You slept 5h 40m, your lowest this week. ✓ saved

Illustration of the app. Not real user data.

Why Meridian

An insight looks like this, and here is why it matters.

A single tracker tells you that you slept badly. Meridian connects the dots no one app can see, then says the one thing you'd have missed, in plain language. No scores to chase, no rings to close. A few of the kinds of patterns it surfaces:

On your lowest-sleep nights, your mood ran about 1.3 lower two days later.

Over the last six weeks, your lowest-rated evenings followed nights under six hours, with a lag of roughly two days. Three short nights in a row was the strongest signal.

your average High-sleep nights 5.2 / 7 Low-sleep nights 3.9 / 7
Mood, two days laterbar is your average, line is the spread
Steady pattern, seen across 42 days
91% yours, from six weeks of your dataThis grows as you log more.
What the science says
Short sleep tends to lower next-day mood and blunt recovery. Meridian shows the effect in your own data first, with the science alongside it.

For illustration purposes, not real user data.

On the days you get outside, your evening energy ran about 1.2 higher.

On days with time outdoors, your evening energy ran noticeably higher than on days spent entirely indoors, and the lift held even through your busier weeks.

your average Days outside 5.1 / 7 Days indoors 3.9 / 7
Evening energy, same daybar is your average, line is the spread
Steady pattern, seen across 42 days
88% yours, from six weeks of your dataThis grows as you log more.

For illustration purposes, not real user data.

In the week after you feel connected, your calm ran about 1.1 higher.

Your calmest days tended to follow the days your connection scores peaked (real time with the people closest to you), with the lift lasting several days, not just the evening itself.

your average After high-connection days 5.4 / 7 Other days 4.3 / 7
Calm, the following weekbar is your average, line is the spread
Emerging pattern, seen across 28 days
64% yours, from four weeks of your dataThis grows as you log more.

For illustration purposes, not real user data.

After a full night of sleep, your late-morning focus ran about 1.4 higher.

The hours you read, write and learn most easily clustered in the late morning, and shrank on the days that followed poor sleep. Your body sets the ceiling for your mind.

your average After a full night 5.5 / 7 After short sleep 4.1 / 7
Late-morning focus, next daybar is your average, line is the spread
Steady pattern, seen across 42 days
82% yours, from six weeks of your dataThis grows as you log more.

For illustration purposes, not real user data.

Some weeks just fit together, and Meridian tells you why.

Your best week last month lined up three things at once: steady sleep, high connection from two real conversations, and time spent on something you care about. Seen alone, none of them stood out.

+ + = sleep connection meaning your week
Steady pattern, seen across 56 days
76% yours, from eight weeks of your dataThis grows as you log more.

For illustration purposes, not real user data.

The whole you

Your life is scattered across a dozen apps, each holding one thin slice. Mood, energy, focus, calm, and connection, held together in one place, so the patterns that only appear when everything is seen at once finally become clear.

Private by design

Your data, your insight, yours alone. Built private from the start, so the most personal thing you own never becomes someone else's product.

No pressure to perform

No streaks, no guilt, no chasing numbers. Meridian is made to make you feel seen, not behind. A calmer relationship with your own life.

The science

Grounded in published research.

Every layer of the idea rests on peer-reviewed research, cited in full and carried into the app alongside your patterns.

About your patterns Read the science

A different kind of technology. One that serves the human, not the metric.

One day, everyone will have something that knows them deeply enough to truly understand them. We're building it, starting with you.

Read the manifesto

Why I built Meridian

I've spent my career finding patterns in scattered, messy information, the kind no single system was ever built to see. Somewhere along the way it struck me that the most fragmented thing of all is us.

Our lives are spread across a dozen apps, each holding one thin slice, none of them able to show us the whole. I wanted something that could: a quiet place that holds all of me at once and helps me notice what I'd miss on my own.

So I started building it, first for myself, and now for you.

Questions

The short version.

Do I need a wearable to use it?
No. The daily check-in is the heart of Meridian: mood and energy in a single gesture, no device required, and your baseline starts forming from what you rate. A wearable makes it fuller. Sleep, resting heart rate and heart rate variability are not things anyone recalls accurately at the end of a day, and they keep recording on the days you forget to check in, so your sense of usual builds while you get on with your life. Connect Apple Health and they sit alongside your own words. The body half of the picture waits until they arrive. It stays optional, and you can add it whenever you like.

What can I connect to it?
Body data is live in the private beta through Apple Health: a short guided setup carries sleep, steps and resting heart rate from whatever you already wear, Garmin included. Your calendar can join too, read on your device alone, and only ever as how full the day was. Direct wearable connections come next, Oura first, then your notes and more, so you don't have to check five apps to understand one week. Connections roll out gradually through the beta.

Is Meridian medical or therapy advice?
No. Meridian reflects your own patterns back to you: it isn't a diagnosis, a therapist, or medical advice, and it won't tell you what's wrong with you. If something about your health worries you, please talk to a qualified professional.

Is my data private?
Yes. Meridian is built private by design: your data is yours, used to give you insight and nothing else, never sold or turned into someone else's product. The details are in our Privacy Policy.

Can I export or delete my data?
Yes. Your data stays yours: you can access it, export it, or delete it at any time, and when you close your account we delete your account and health data. The specifics are in our Privacy Policy.

Can I add the people who matter?
Yes. Connection isn't only a slider. You can log the real conversations and moments that matter, in your own words, and Meridian holds them next to your sleep and mood, so your social life is part of the picture rather than an afterthought.

Does it take weeks before it's useful?
No. Meridian doesn't start blank. A few first questions and the mirror already reflects something back, and it sharpens as your own days accumulate.

Field notes

Building in the open.

All field notes →

Early access

Be among the first to be seen clearly.

Meridian's beta is live, opening in small waves. Request access and we'll reach out when yours is ready.

You're on the list. We'll reach out when your wave opens. Welcome.