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HealthBrew

Sophia — an AI coach that remembers what you told her

Brew more green days.

Every night, rate your day in 60 seconds: green, yellow, or red. Sophia reads the good days, tells you what they have in common, and reminds you to do those things tomorrow.

Your first 30 daily closes are on us. Cancel anytime.

Download on the App StoreBuilt by Alex Antoniou, MD

The hills of Ikaria, Greece — the island where one in three people live into their 90s

What a green day is

Here is what a green day looks like.

A green day is a day you slept well, ate well, moved, and saw people you like. Here are six choices someone made. Sophia's job is working out which choices show up on your green days.

Got morning sunlight ·Walked before checking the phone ·Skipped the drink ·Exercised ·Time with people they love ·Closed the day green

An example, not a checklist. Your list comes from the days you close yourself.

Sophia finds what your green days have in common.

Three months of closed days, sped up. Sample data, not a real user.

Day 0

One square per closed day — green, yellow, red.

Reading the days…

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Sample forecast

82% Green Day

Your own pattern starts tonight.

Your storybook

Close seven days, get an illustrated page.

Write down a moment from your day at the nightly close. HealthBrew turns it into a picture. The pages build into a storybook you keep.

Storybook illustration — Coffee on the porch before anyone woke up
Coffee on the porch before anyone woke up
Storybook illustration — Called my sister
Called my sister
Storybook illustration — Walked after dinner without my phone
Walked after dinner without my phone
Storybook illustration — Read for twenty minutes before bed
Read for twenty minutes before bed
Storybook illustration — Cooked instead of ordering in
Cooked instead of ordering in
Storybook illustration — Lights out on time
Lights out on time
Storybook illustration — Coffee on the porch before anyone woke up
Coffee on the porch before anyone woke up
Storybook illustration — Called my sister
Called my sister
Storybook illustration — Walked after dinner without my phone
Walked after dinner without my phone
Storybook illustration — Read for twenty minutes before bed
Read for twenty minutes before bed
Storybook illustration — Cooked instead of ordering in
Cooked instead of ordering in
Storybook illustration — Lights out on time
Lights out on time

Real pages from a sample account. Yours are made the same way.

You'll be surprised how easy this ritual is.

The HealthBrew calendar, each closed day filled with its color

Your calendar

Every day you close gets a color. A month on one screen.

A conversation with Sophia referring back to something written earlier

Sophia remembers

Tell her a goal once. She brings it up weeks later, unasked.

The seven ingredients, each showing the habits behind green days

What shapes your day

Seven threads — and the habits of yours that show up on green days.

Your first 30 daily closes are on us.

Start freeDownload on the App Store

No credit card required.

Built for real days

Your ring measures your body. Nothing was measuring your day.

How you slept, what you ate at your desk, who you actually talked to. That's the part you can do differently tomorrow — so that's the part HealthBrew asks about, every night.

A day trader at their monitors before dawn, hand in their hair, mid-pressure.
Steady Hands

When it's red on the screen

Your best trading days have something in common.

A nurse resting on a locker-room bench after a long night shift.
Night Shift

After the hard shift

Stack enough green days to carry the hard ones.

A parent packing lunchboxes at the kitchen counter in the early morning.
Family Load

Lights-out, one more page

Two minutes a night that are only yours.

A founder working late at a laptop, hand to forehead, lit by one lamp.
Builders

Between the fires

Find out what your good days are made of.

An athlete straining under a loaded barbell in a dim gym, chalk in the light.
Morning Milers

On the days it counts

Learn what sets up the days you feel strong.

Someone sitting on the back-porch steps at dusk with a mug of tea, the kitchen window glowing behind them.
Fresh Starts

The hour it used to own

Day one is hard. Day thirty is yours.

Dr. Alex Antoniou, builder of HealthBrew
HealthBrew automates the process I started on paper. It remembers every day, connects the dots across months of your life, identifies the handful of habits most predictive of your green days, and helps you repeat them. What started as a personal experiment became the tool I still use every day, and I hope it helps you build more green days of your own.
— Alex Antoniou, MD, builder of HealthBrewBoard-certified in Lifestyle Medicine

Quick answers.

What is HealthBrew?

A physician-built app that learns what your green days have in common. Each night you close your day in 60 seconds — how it went, what shaped it. Over time, Sophia spots the handful of habits that keep showing up on your best days and surfaces them so you can repeat them on purpose. Not a journal. A pattern-finder for your own life.

What is Sophia trained on?

Sophia is a system of specialized agents built on lifestyle medicine, longevity research, performance coaching, and behavior change — designed by a physician board-certified in lifestyle medicine. On top of that she remembers your days: what you logged, what tended to line up with your green ones, what didn't. That memory is yours alone. Your entries are never sold and never used to train public AI models.

What can I do for free?

Your first 30 daily closes are on us — no credit card, cancel anytime. That's a full month of closing days and building your private baseline. If you want to keep going, it's one simple monthly plan, and you see the exact price in the app before you ever pay.

Do I need a wearable or lab report?

No. Wearables measure your body — heart rate, sleep stages, steps. HealthBrew helps you understand the life behind those numbers: the stress, the people, the choices that shaped the day. They complement each other. Bring in a screenshot from your ring or labs anytime for extra context, but the core loop is just you, closing your day.

Is HealthBrew on iOS?

Yes. HealthBrew: AI Habit Journal is on the App Store now — download it and close your first day tonight. It also works in any browser, and your days sync between the two.

What happens to my data and my labs?

No legal name, no birthday — just an email, an avatar, and a timezone. If you bring in labs, HealthBrew turns them into a plain-language note Sophia remembers, then deletes the raw values. Your entries are never sold and never used to train public AI models. Your days are yours.

Is HealthBrew medical advice?

No. HealthBrew is educational self-reflection — not medical care, therapy, diagnosis, or crisis support. It helps you notice patterns in your own days; it never tells you what to do about your health. For medical decisions, talk to your physician.

Watch

What if today went green?

Five hard days, one honest question. The 30-second film for anyone brewing more green days.

Built by Days

The daily practices behind extraordinary lives.

Chris Nikic — Built by Days episodeWilma Rudolph — Built by Days episodeFauja Singh — Built by Days episodeArianna Huffington — Built by Days episodeMichael Phelps — Built by Days episode

Watch Built by Days, then test the lesson in your own life. One idea, repeated, changes the pattern.

Meet the HEROES