The intersection of human experience & AI
Meridian is a personal AI that sees all of you at once. Your body, your emotions, your experiences, your world.
It shows you what you'd miss alone. Not a tracker. Not a journal. A model of you that finally understands the whole picture.
Meridian Self. The app that learns you, inward.
Early access, in small waves. Your data stays yours, always.
The problem
Each one sees a sliver. None sees you.
The data that explains how you feel lives in the gaps between your apps, exactly where nothing is looking. Your sleep is in one place, your mood in another, your week in a third. The connections never meet.
Right now, each part of you lives in a different app:
What it is
Meridian puts you at the centre and connects every dimension to you, and to each other. The insight lives in the links: how your body, mood, and world move together over time.
Why Meridian
Most technology points outward, to feeds, metrics, and other people's lives. Meridian points inward.
Body, emotions, experiences, social life, and growth in a single model, so it can surface the patterns that only appear when everything is seen together.
Your data, your model, your insight. Built private-first so the most personal thing you own never becomes someone else's product.
No streaks, no guilt, no metric worship. Meridian is made to make you feel seen, not behind. A calmer relationship with your own life.
The evidence
Meridian isn't a hunch. Each layer of the idea, that your life is fragmented, that your body and mood move together, that seeing yourself clearly changes how you feel, rests on peer-reviewed research.
Human-computer interaction research finds that no single app can hold the varied goals people track, so they scatter across ecosystems of tools, and stitching that data back together is named as a distinct, unsolved stage of self-tracking.
Personal informatics 1, 2Inferring emotional and mental states from multimodal signals, sleep, activity, heart-rate variability, is an established field. Systematic reviews of dozens of studies, and clinical work in npj Digital Medicine, show the body-to-emotion link Meridian reads is real science.
Digital phenotyping 3, 4, 5The link at the heart of Meridian, "you feel low when you don't sleep," is borne out by daily-diary studies showing sleep and mood move together, each shaping the next day. These are exactly the connections a single-domain app cannot see.
Sleep & emotion 6, 7A clear, stable sense of self predicts higher wellbeing and lower depression and anxiety. Early AI-reflection tools point the same way, while reminding us the field is young, which is precisely the space Meridian is built to fill.
Self-concept & reflection 8, 9, 10References
One day, everyone will have an AI that knows them deeply enough to truly understand them. We're building it, starting with you.
Early access
Meridian opens in small waves. Join the waitlist and we'll reach out when yours is ready.