Introducing · For iOS & Android

The AI companion that listens when you can't talk to anyone else.

A calm, private space to check in, track how you're really feeling, and never worry about your data. Mood diary, weekly wellbeing check-in, medication log — a thoughtful companion for the everyday ups and downs.

No name required Encrypted & private 7-day free trial
01 · Warm Listens first A patient AI that lets you sit with how you feel, instead of fixing it.
02 · Private No name needed Anonymous account from launch — no name, no email, no phone number.
03 · Calm No streaks. No nudge. Missing a day is fine. Lumi is designed to support, not to nag.
04 · Considered Grounded in care Built around the S8 wellbeing check-in. Doctor-ready PDF reports.
What's inside

The app, in thirty seconds.

Chat with Lumi when you need to. Log your mood in four taps. Complete a two-minute wellbeing check-in once a week. Keep a private medication diary. Generate a clean PDF report to share with your doctor. That's it.

8
items, 2 minutes
4
taps to diary
0
streaks or badges
Three Lumi app screens shown side-by-side: a warm chat with Lumi, the weekly mood diary with S8 wellbeing score, and a doctor-ready report.
Six quiet tools

Built to support,
never to nag.

Lumi isn't a therapy replacement and it isn't a clinical tool. It's a thoughtful companion that helps you notice patterns, prepare for appointments, and feel less alone with how you feel.

01 · Companion

Talk to Lumi when you need to.

Vent, reflect, or just feel heard. Lumi listens without judging, notices patterns over time, and gently helps you make sense of how you're feeling.

02 · Daily diary

Four taps. That's the whole diary.

Good, Low, Anxious, or Flat. Build a picture of your mood over weeks and months — without effort, and never a guilt-trip for skipping a day.

03 · Weekly check-in

Your weekly wellbeing score.

The S8 takes two minutes a week. See your score trend, your severity band, and your anxiety flag — in plain language, never clinical jargon.

04 · Medication diary

A private log for meds & side‑effects.

Track doses, timings, and side-effect notes. Lumi never comments on your medication. This space is yours alone — useful when something shifts.

05 · Doctor PDF report

Walk into appointments prepared.

Generate a clear PDF of your S8 scores, mood summary, and medication log. Share it with your doctor or therapist — make the most of fifteen minutes.

06 · Privacy first

No name. No email. No tracking.

Everything is stored under an anonymous ID, encrypted in transit and at rest, and never sold or used for advertising. Export or delete all your data at any time.

Inside the weekly check-in

Two minutes a week. A clearer picture over months.

The S8 is a short, 8-item wellbeing check-in. Each week you get a score, a severity band, and an anxiety flag — written in plain English. Watch the trend, not the number.

8items · 2 minutes
52weeks of trend
0clinical jargon
Privacy, by default

Lumi doesn't
know who you are.

We never ask for your name or your email. Everything you record is stored anonymously, encrypted, and never sold or used for advertising. Export or delete it any time.

Read the privacy policy Consumer health data policy
Mental health · reading

A small, curated reading list.

The same gentle, carefully chosen feed that appears inside the app — refreshed each week. Open a piece, take what's useful, leave the rest.

Lumi is a general wellness app. Articles are summarised for informational purposes and are not a substitute for professional mental-health care.

Lumetrix Labs

Made by Lumetrix Labs, in England.

Lumi is the consumer brand for a mental-health research practice. We build careful tools — including the Lumetrix S8 wellbeing check-in. Lumi is a general wellness app, not a medical device.

Stay close

Quiet updates.
No shouting.

We post sparingly. When we do, it's a small new feature, a thoughtful piece of writing, or a heads-up that the app has landed on the App Store.

In crisis? Call or text 988 (Suicide & Crisis Lifeline), text HOME to 741741, or call 911. Lumi is not a crisis service.